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Critical SonicWall SMA1000 Vulnerabilities CVE-2026-83548, CVE-2026-83549 Exploited in the Wild

SonicWall SMA1000 appliances face active exploitation of chained CVE-2026-83548 and CVE-2026-83549 enabling unauthenticated RCE; hotfixes released.

SonicWall disclosed on September 1, 2026 that CVE-2026-83548, a critical pre-authentication SSRF in the SMA1000 Appliance Work Place interface (CVSS 10.0), and CVE-2026-83549, an authenticated OS command injection in the Appliance Management Console, can be chained for unauthenticated remote code execution. Both vulnerabilities are confirmed exploited in the wild and were added to CISA's Known Exploited Vulnerabilities catalog. Affected SMA1000 models 6210, 7210 and 8200v on versions 12.4.3-03453 and 12.5.0-02835 platform-hotfix or earlier require upgrades to 12.4.3-03526 or 12.5.0-02952 platform-hotfixes.

Rapid7 Blog · 13d agoExploit / PoC in the wildCVE-2026-83548CVE-2026-83549

SonicWall SMA 1000 appliances under attack via zero-day flaws

SonicWall confirms active exploitation of zero-day SSRF (CVE-2026-83548) and command injection (CVE-2026-83549) flaws in SMA 1000 remote access appliances.

SonicWall confirmed attackers are actively exploiting two previously undisclosed vulnerabilities in SMA 1000 SSL VPN appliances, affecting physical and virtual models 6210, 7210, and 8200v but not SMA 100 appliances or SonicWall firewalls. CVE-2026-83548 is a pre-authentication SSRF in the Appliance Work Place interface allowing remote unauthenticated attackers to gain unauthorized access to sensitive functionality, while CVE-2026-83549 is an OS command injection in the Appliance Management Console that can yield remote code execution under specific conditions for authenticated admins. The vendor urged immediate hotfix deployment, IoC review with technical support, and re-imaging or redeployment plus password and TOTP token resets on confirmed compromise. This is the latest in a series of zero-day attacks against SMA 1000 appliances following waves in late 2025 and June-July 2026.

Help Net Security · 13d agoExploit / PoC in the wildCVE-2026-83548CVE-2026-83549

SonicWall Patches Two New Actively Exploited Zero

SonicWall patches two actively exploited SMA 1000 VPN zero-days: CVSS 10.0 pre-auth SSRF CVE-2026-83548 and post-auth command injection CVE-2026-83549, chained for RCE.

SonicWall released hotfixes for two zero-day vulnerabilities in its SMA 1000 VPN appliances, with SonicWall PSIRT confirming active exploitation in the wild. CVE-2026-83548 (CVSS 10.0) is a pre-authentication SSRF in the Appliance Work Place interface allowing unauthenticated unauthorized operations; CVE-2026-83549 (CVSS 7.8) is a post-authentication OS command injection in the Appliance Management Console enabling arbitrary command execution and RCE. The flaws affect models 6210, 7210 and 8200v running 12.4.3-03453 or earlier and 12.5.0-02835 or earlier, fixed in versions 12.4.3-03526 and 12.5.0-02952. This follows a July Volexity report on threat actor UTA0533 chaining two SMA 1000 zero-days to gain root access and deploy the KNUCKLEBALL Python backdoor.

Security Affairs · 13d agoExploit / PoC in the wildCVE-2026-83548CVE-2026-83549CVE-2026-15409+1 CVEs1

Attackers Exploit Two SonicWall SMA 1000 Zero-Days That May Form an Attack Chain

SonicWall patches two actively exploited zero-days (CVE-2026-83548, CVE-2026-83549) in SMA 1000 VPN appliances, likely chained for code execution.

SonicWall fixed CVE-2026-83548 (CVSS 10.0), a pre-authentication SSRF in the Appliance Work Place interface, and CVE-2026-83549 (CVSS 7.8), a post-authentication OS command injection in the Appliance Management Console. The company investigated a case indicating active exploitation, suggesting attackers chained both bugs to execute arbitrary code on susceptible devices. Affected SMA 1000 models 6210, 7210, and 8200v require hotfixes 12.4.3-03526 or 12.5.0-02952; customers are urged to hunt for IoCs and re-image, reset credentials, and rotate TOTP if found.

The Hacker News · 13d agoExploit / PoC in the wildCVE-2026-83548CVE-2026-83549CVE-2026-15409+1 CVEs

CISA Warns of SonicWall SMA1000 Vulnerabilities Active Exploitation (CVE-2026-83548 & CVE-2026-83549)

CISA added two actively exploited SonicWall SMA1000 flaws to KEV: pre-auth SSRF CVE-2026-83548 (CVSS 10) and post-auth RCE CVE-2026-83549; patch by September 5.

CISA added CVE-2026-83548 and CVE-2026-83549 to the Known Exploited Vulnerabilities Catalog with a September 5, 2026 patch deadline. CVE-2026-83548 is a critical (CVSS 10.0) pre-authentication SSRF in the SMA1000 Appliance Work Place interface; CVE-2026-83549 is a high (CVSS 7.8) post-authentication OS command injection leading to RCE in the Appliance Management Console. SMA1000 models 6210, 7210, and 8200v running 12.4.3-03453 or 12.5.0-02835 platform-hotfix and older are affected; fixes ship in 12.4.3-03526 and 12.5.0-02952. Qualys customers can detect vulnerable assets via QID 388624.

Qualys ThreatPROTECT · 12d agoExploit / PoC in the wildCVE-2026-83548CVE-2026-83549

Hackers Chain Two New SonicWall Zero-Day Vulnerabilities

SonicWall warns two zero-days (CVE-2026-83548 SSRF, CVE-2026-83549 post-auth RCE) in SMA1000 appliances are being actively exploited.

A September 1 SonicWall advisory discloses actively exploited zero-days in SMA1000 appliance models 6210, 7210 and 8200v, affecting platform-hotfix versions 12.4.3-03453 and 12.5.0-02835 and older. CVE-2026-83548 (CVSS 10.0) is a pre-authentication SSRF in the Appliance Work Place interface via an unintended alternate access path; CVE-2026-83549 (CVSS 7.8) is post-authentication OS command injection enabling RCE in the Appliance Management Console. SonicWall urges hotfix upgrades, IOC checks with SonicWall support, and re-imaging plus credential and TOTP resets if compromise is found.