Vulnerabilities

CVE-2026-83548 is a critical (CVSS 3.1 score 10.0) server-side request forgery (SSRF) vulnerability in the Workplace interface of SonicWall SMA1000 appliances, caused by an unintended alternate access path (unprotected alternate channel, CWE-441; SSRF, CWE-918). Because it is pre-authentication, any remote unauthenticated attacker who can reach the interface can trigger it and gain unauthorized access to sensitive functionality and perform unauthorized operations. CISA lists all SonicWall SMA1000 appliances as affected, with CPE data naming the SMA 8200v and SMA 6210/7210 firmware; internet-exposed units are at highest risk. The flaw is being actively exploited in the wild: it was added to CISA's Known Exploited Vulnerabilities catalog on 2026-09-02 alongside companion zero-day CVE-2026-83549, which reporting suggests may form an attack chain with this SSRF. Exploitation probability is elevated (EPSS 4.7%, 91st percentile) and no public proof-of-concept is known.

Do: Apply the fixes/mitigations from SonicWall security advisory AV26-872 (Update 1) immediately, prioritizing internet-exposed SMA 1000 appliances, and treat companion zero-day CVE-2026-83549 as requiring remediation in the same maintenance window. Review SMA 1000 logs for signs of exploitation (unexpected access to or requests against the Workplace interface) and reduce internet exposure of that interface where feasible. Per the CISA KEV required action and BOD 26-04, patch per vendor instructions or, where mitigations are unavailable, evaluate each asset's internet exposure and discontinue use of the product until remediated.

CVE-2026-15409 is a server-side request forgery (SSRF, CWE-918) in the Appliance Work Place interface of SonicWall SMA1000 series appliances. A remote, unauthenticated attacker can trigger the flaw over the network, causing the appliance to issue requests to attacker-influenced or unintended internal locations. Because the CVSS vector scores scope-changed impacts on confidentiality, integrity, and availability, the SSRF is assessed as capable of reaching sensitive internal services, and reporting indicates it is being used alongside a second SMA1000 zero-day in what may be an exploitation chain. Affected organizations are those running SMA1000 appliances, including SMA 6210, SMA 7210, and SMA 8200v models, which typically act as internet-facing remote-access/VPN gateways. Exploitation is confirmed in the wild: the flaw was added to CISA's KEV on 2026-07-14, ransomware use is known, and EPSS assigns an 83.7% probability of exploitation within 30 days, though no public PoC is available.

Do: Apply SonicWall's SMA1000 firmware update per the vendor's instructions immediately, prioritizing appliances with the Appliance Work Place interface reachable from the internet. Because the flaw is in CISA's KEV with known ransomware use and may be chained with a second SMA1000 zero-day, hunt for signs of compromise (unexpected outbound or internal requests, anomalous VPN sessions, follow-on ransomware activity) and restrict internet exposure of the interface in the interim. Federal and critical-infrastructure operators must comply with CISA BOD 26-04, including cloud-service guidance, or discontinue use if mitigations are unavailable.

A vulnerability in the access control mechanism of SonicOS may allow certain management interface functions to be accessible under specific conditions.

Improper neutralization of special elements used in an SQL command (“SQL Injection”) in SonicWall SMA1000 series appliances allows a remote authenticated attacker with read-only administrator privileges to escalate privileges to primary administrator.

A stored Cross-Site Scripting (XSS) vulnerability has been identified in the SonicWall Email Security appliance due to improper neutralization of user-supplied input during web page generation, allowing a remote authenticated attacker as admin user to potentially execute arbitrary JavaScript code.

A post-authentication Stack-based Buffer Overflow vulnerability in SonicOS certificate handling allows a remote attacker to crash a firewall.

A post-authentication Format String vulnerability in SonicOS allows a remote attacker to crash a firewall.

CVE-2025-40602 is a missing-authorization vulnerability (CWE-862, with CWE-250 unnecessary-privilege issues) in the appliance management console (AMC) of SonicWall's SMA1000 secure-access appliances, characterized by CISA as a privilege escalation flaw; the CVSS vector (AV:N/AC:H/PR:H/UI:N, CVSS 3.1 score 6.6) indicates it is reachable over the network but requires an attacker that already holds high privileges. An attacker who has obtained AMC access can invoke insufficiently authorized actions to escalate privileges and gain high-impact control of the appliance, with high confidentiality, integrity, and availability impact. Affected products are the SMA1000 appliance line — SMA 6200, 6210, 7200, and 7210 firmware and the SMA 8200V virtual appliance. The flaw is being actively exploited in the wild: CISA added it to the Known Exploited Vulnerabilities catalog on 2025-12-17 and SonicWall has warned of active exploitation and shipped fixes, while EPSS estimates a 2.1% probability of exploitation within 30 days (81st percentile) and ransomware use is unknown.

Do: Apply the patched SMA1000 firmware identified in SonicWall's security advisory immediately (the source data does not specify the fixed version), and follow CISA BOD 22-01 guidance for cloud services or discontinue use if mitigations are unavailable. Until patched, restrict AMC access to trusted management networks or a VPN, and review appliance logs for indicators of unauthorized access since exploitation is confirmed in the wild.

Download of Code Without Integrity Check Vulnerability in the SonicWall Email Security appliance loads root filesystem images without verifying signatures, allowing attackers with VMDK or datastore access to modify system files and gain persistent arbitrary code execution.

A Stack-based buffer overflow vulnerability in the SonicOS SSLVPN service allows a remote unauthenticated attacker to cause Denial of Service (DoS), which could cause an impacted firewall to crash.

A potential exposure of sensitive information in log files in SonicWall SMA100 Series appliances may allow a remote, authenticated administrator, under certain conditions to view partial users credential data.

Use of Externally-Controlled Format String vulnerability in the SonicOS SSL VPN interface allows a remote unauthenticated attacker to cause service disruption.

CVE-2025-40596 is a stack-based buffer overflow (CWE-121) in the web interface of SonicWall's SMA100 series secure access appliances, affecting the SMA 210 and SMA 410 hardware models and the SMA 500v virtual appliance. It can be triggered remotely by an unauthenticated attacker sending crafted input to the appliance's web interface, requiring no valid credentials or user interaction per the CVSS vector (AV:N/AC:L/PR:N/UI:N). Successful exploitation can crash the web interface to cause a denial of service and may potentially result in code execution on the appliance. Any organization running SMA100 series firmware (SMA 210, SMA 410, or SMA 500v) with the web interface reachable is affected, which is the typical deployment because the appliance portal and management interface are designed to be internet-facing. No public proof-of-concept, CISA KEV listing, or confirmed in-the-wild exploitation is known yet, but the high EPSS score (56.5% probability of exploitation within 30 days, 99th percentile) makes near-term exploitation attempts likely.

Do: Upgrade all SMA 210, SMA 410, and SMA 500v appliances to the latest SMA100 series firmware from SonicWall, checking the SonicWall PSIRT advisory for CVE-2025-40596 for the exact fixed versions (not listed in this record). Until patching is complete, restrict access to the SMA web interface to trusted source addresses where feasible and monitor for web service crashes, appliance reboots, or anomalous requests, given the elevated likelihood of near-term exploitation indicated by the EPSS score.

An authenticated arbitrary file upload vulnerability exists in the SMA 100 series web management interface. A remote attacker with administrative privileges can exploit this flaw to upload arbitrary files to the system, potentially leading to remote code execution.

A vulnerability in SMA100 allows a remote authenticated attacker with SSLVPN user privileges to bypass the path traversal checks and delete an arbitrary file potentially resulting in a reboot to factory default settings.

A Server-side request forgery (SSRF) vulnerability has been identified in the SMA1000 Appliance Work Place interface, which in specific conditions could potentially enable a remote unauthenticated attacker to cause the appliance to make requests to an unintended location.

CVE-2025-23006 is a deserialization of untrusted data flaw (CWE-502) in the Appliance Management Console (AMC) and Central Management Console (CMC) of SonicWall SMA1000 secure-access appliances. A remote, unauthenticated attacker who can reach a vulnerable console can submit crafted serialized data that, when processed, executes arbitrary operating-system commands on the appliance. Successful exploitation yields OS-level command execution, which is enough to fully compromise the appliance, pivot into the networks it protects, or stage ransomware. Any organization running a SonicWall SMA1000 appliance whose AMC or CMC is reachable — including management consoles exposed to the internet or to shared management networks — is affected. The flaw was added to CISA's Known Exploited Vulnerabilities catalog on 2025-01-24 with known ransomware use, and EPSS assigns a 23.4% probability of exploitation within 30 days (98th percentile), although no public proof-of-concept is known and a CVSS score has not yet been published.

Do: Apply SonicWall's fix or vendor-specified mitigations immediately, per CISA's KEV required action; the available data does not state fixed version numbers, so use SonicWall's advisory to identify the correct firmware. Until patched, restrict AMC/CMC access to trusted management networks and remove any direct internet exposure of the consoles. Because ransomware use is known, hunt for indicators of compromise on internet-reachable SMA1000 appliances, including unexpected processes, new accounts, and unusual outbound connections.

CVE-2024-53704 is a critical (CVSS 9.8) improper authentication flaw (CWE-287) in the SSLVPN authentication mechanism of SonicWall's SonicOS. A remote, unauthenticated attacker can exploit it over the network without user interaction, bypassing SSLVPN authentication to gain unauthorized access to the VPN and a foothold into protected internal networks. CISA notes known ransomware use, making this a high-value entry point for follow-on attacks. Any organization running SonicWall SonicOS with SSLVPN enabled is affected. Exploitation is confirmed in the wild: CISA added the flaw to the Known Exploited Vulnerabilities catalog on 2025-02-18, public scans show 5,000+ internet-exposed SonicWall firewalls still unpatched, and EPSS rates the 30-day exploitation probability at 95.1%.

Do: Upgrade affected SonicOS deployments to the patched releases listed in SonicWall's advisory, prioritizing internet-facing SSLVPN endpoints. Until patched, restrict or disable SSLVPN exposure where feasible and hunt for signs of exploitation, since ransomware use is known. Remediation must satisfy CISA KEV required actions (apply vendor mitigations or discontinue use).

A vulnerability in the SonicWall SMA100 SSLVPN firmware 10.2.1.13-72sv and earlier versions mod_httprp library loaded by the Apache web server allows remote attackers to cause Stack-based buffer overflow and potentially lead to code execution.

CVE-2024-40766 is an improper access control flaw (CWE-284) in SonicWall SonicOS management access that can allow unauthorized access to protected resources and, under specific conditions, crash the affected firewall. It is network-exploitable without privileges or user interaction per its CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N) and affects Gen 5 and Gen 6 appliances as well as Gen 7 devices running SonicOS 7.0.1-5035 or older. A successful attacker gains unauthorized access to resources behind or on the appliance and can potentially take the firewall offline, creating opportunities for follow-on attacks such as VPN account compromise and ransomware deployment. The flaw was added to CISA's Known Exploited Vulnerabilities catalog on 2024-09-09 with known ransomware use, and recent reporting ties Akira ransomware activity — including MFA bypass on SonicWall VPNs affecting over 100 accounts — to this legacy bug combined with password reuse. No public PoC is known, but EPSS assigns an ~18.2% probability of exploitation within 30 days (97th percentile).

Do: Upgrade Gen 7 appliances to SonicOS 7.0.1-5037 or later (the fixed release beyond the affected 7.0.1-5035) and move Gen 5/6 devices to the latest SonicOS release SonicWall supports for those generations; per CISA KEV guidance, apply vendor mitigations or discontinue use if patching is not possible. Restrict WAN-side management and SSLVPN access to trusted sources, audit VPN accounts for password reuse, rotate credentials and any locally stored recovery codes, and review logs for signs of Akira-related compromise such as MFA bypass or disabled EDR agents.

Heap-based buffer overflow vulnerability in the SonicOS IPSec VPN allows an unauthenticated remote attacker to cause Denial of Service (DoS).

Vulnerability in SonicWall SMA100 NetExtender Windows (32 and 64-bit) client 10.2.339 and earlier versions allows an attacker to arbitrary code execution when processing an EPC Client update.

RADIUS Protocol under RFC 2865 is susceptible to forgery attacks by a local attacker who can modify any valid Response (Access-Accept, Access-Reject, or Access-Challenge) to any other response using a chosen-prefix collision attack against MD5 Response Authenticator signature.

CVE-2024-38475 is an improper escaping of output flaw (CWE-116) in the mod_rewrite module of the Apache HTTP Server. It is triggered when mod_rewrite maps a request URL to a filesystem location and mishandles encoded characters, allowing a crafted request to reach files that the server is permitted to serve but that were never intentionally or directly reachable by any URL. An attacker can abuse this to disclose source code (for example, serving raw application files) or, depending on the server's configuration and handlers, achieve code execution. Any Apache HTTP Server deployment that uses mod_rewrite is potentially affected; the source data does not specify the vulnerable version range. The flaw was added to CISA's Known Exploited Vulnerabilities catalog on 2025-05-01, confirming exploitation in the wild, and EPSS assigns it a 100% probability of exploitation within 30 days (100th percentile), though no public proof-of-concept is known and ransomware use is unconfirmed.

Do: Inventory Apache HTTP Server deployments, prioritize internet-facing ones, and check whether mod_rewrite is in use (RewriteRule directives in server config, virtual hosts, or .htaccess files); upgrade to the vendor's fixed release, 2.4.60 or later. If immediate upgrade is not possible, follow vendor guidance to harden or constrain mod_rewrite rules, and treat the issue as actively exploited per CISA KEV, applying BOD 22-01 mitigations for cloud service usage or discontinuing use if mitigation is unavailable.

A security regression (CVE-2006-5051) was discovered in OpenSSH's server (sshd). There is a race condition which can lead sshd to handle some signals in an unsafe manner. An unauthenticated, remote attacker may be able to trigger it by failing to authenticate within a set time period.

Stack-based buffer overflow vulnerability in the SonicOS HTTP server allows an authenticated remote attacker to cause Denial of Service (DoS) via sscanf function.

Improper access control vulnerability has been identified in the SMA100 SSL-VPN virtual office portal, which in specific conditions could potentially enable a remote authenticated attacker to associate another user's MFA mobile application.

An improper authentication vulnerability has been identified in SonicWall SonicOS SSL-VPN feature, which in specific conditions could allow a remote attacker to bypass authentication. This issue affects only firmware version SonicOS 7.1.1-7040.