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Defused Cyber

0 mentions in 7 days · 2 in 30 days · 3 total · first seen Aug 12, 2026 · last 14d ago

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Exploitation of Sangoma Switchvox flaw is underway (CVE-2026-9586)

Attackers actively exploit SQL injection flaw CVE-2026-9586 in unauthenticated Sangoma Switchvox endpoints, dropping reverse shells and second-stage cryptominer malware.

CVE-2026-9586, an unauthenticated SQL injection in Sangoma Switchvox SMB Edition 8.3, lets crafted HTTP POST requests execute arbitrary SQL against the backend PostgreSQL database. Horizon3 honeypots first saw exploitation on August 30, 2026 from IP 176.65.148.184, and dozens of additional source IPs have since joined with scanning payloads and second-stage malware that appears to be a cryptominer. The flaw was patched in Switchvox 8.4.0.2 on July 14, 2026; roughly 4,000 exposed instances exist, mostly in the United States, and exploitation is likely against most of them.

Help Net SecuritySep 2, 00:00 UTC · 14d agoExploit / PoC in the wildCVE-2026-9586

CVE-2026-9586 | Sangoma Switchvox Unauthenticated SQL Injection Remote Code Execution Vulnerability

CVE-2026-9586, a critical unauthenticated SQL injection to RCE in Sangoma Switchvox, is being actively exploited against internet-facing systems per honeypot observations.

CVE-2026-9586 (CVSS 4.0: 9.3) is an unauthenticated SQL injection in the /pa endpoint of Sangoma Switchvox SMB Edition, where the unsanitized PhoneIP value in XML phone notification requests reaches the PostgreSQL database. Horizon3 demonstrated escalation to OS command execution, and honeypots run with Defused Cyber observed exploitation attempts on August 30, 2026, using PostgreSQL commands with nc and curl. Fixed in Switchvox 8.4.0.2 released July 14, 2026; one attacker IP (176.65.148.184) was documented.

Horizon3.aiSep 1, 15:32 UTC · 14d agoExploit / PoC in the wildCVE-2026-9586

Attackers Exploit VMware vCenter Vulnerability to Gain Persistent Remote Access

Attackers actively exploit critical VMware vCenter flaw CVE-2026-59310, installing reverse_ssh backdoors on 361 hosts across 47 countries.

QUIRSO observed active exploitation of CVE-2026-59310 (CVSS 9.8), a directory-traversal flaw in VMware vCenter allowing arbitrary code execution, patched by Broadcom in late July. Attack chains deploy a malicious cron job running the open-source reverse_ssh tool for persistence, with compromised systems phoning home starting August 3, five days after disclosure. Forensics show 361 unique victim IPs in 47 countries, mostly Germany, the U.S., Turkey, Iran, and France, with the actor suspected to be an APT. Separately, Defused Cyber reports rising scanning indicative of exploitation of related CVE-2026-59309, an unauthenticated auth bypass in vmdir.

The Hacker NewsAug 12, 16:41 UTC · Aug 12, 2026Exploit / PoC in the wildCVE-2026-59310 CVE-2026-59309

Related CVEsby mentions

CVE-2026-95869.312%
Unauthenticated SQL Injection RCE in Sangoma Switchvox SMB Edition
Sangoma Switchvox SMB Edition 8.3 (build 104997) contains an unauthenticated SQL injection flaw (CWE-89) in its /pa endpoint, where the user-controlled PhoneIP value from XML input is concatenated directly into PostgreSQL queries without sanitization or parameterization. A single crafted request lets a remote, unauthenticated attacker execute arbitrary SQL statements against the backend PostgreSQL database, which can be escalated to remote code execution on the server. Any organization running the affected Switchvox SMB Edition build is exposed, especially appliances reachable from the internet. Exploitation is confirmed in the wild: the flaw was added to CISA's KEV catalog on 2026-09-02, and researchers have observed attackers using it without credentials to deploy reverse shells and cryptocurrency miners.
· Sangoma Switchvox SMB Edition 8.3 (build 104997) KEV PoC moderate
CVE-2026-593109.846%
Unauthenticated Path Traversal RCE in Broadcom VMware vCenter Server Syslog
CVE-2026-59310 is a directory traversal (CWE-22) vulnerability in the Syslog server component of VMware vCenter Server, rated critical at CVSS 9.8. It can be triggered over the network without authentication or user interaction, allowing a malicious actor with network access to vCenter to achieve arbitrary code execution. An attacker who exploits it gains code execution on the vCenter appliance, and reported campaigns show it has been used to establish persistent remote access and, by a suspected China-nexus actor, to deploy Babuk ransomware. Any organization running an affected version of vCenter Server is exposed, especially where the management interface is reachable from the internet; the available data does not specify affected version ranges. Exploitation is confirmed in the wild: CISA added the flaw to its Known Exploited Vulnerabilities catalog on 2026-08-18, it was reportedly exploited just five days after disclosure, and EPSS estimates a 45.9% probability of exploitation within 30 days (99th percentile).
· Broadcom (VMware) vCenter Server KEV ransomwarelarge
CVE-2026-593099.88%
VMware vCenter contains an authentication bypass vulnerability in the VMware Directory Service.
VMware vCenter contains an authentication bypass vulnerability in the VMware Directory Service. A malicious actor with network access to vCenter may exploit this issue to bypass authentication and gain unauthorized access to the system.
· vmware vcenter server—

Appears with

organization Sangoma 2 vendor Sangoma 2 organization Horizon3 2 product Switchvox 2 vendor Horizon3 2 organization Security Risk Advisors 1 organization The Hacker News 1 product Asterisk 1 product PostgreSQL 1 product reverse_ssh 1 product VMware Tools 1 product VMware vCenter 1 vendor Broadcom 1 vendor QUIRSO 1 vendor Security Risk Advisors 1 vendor SentinelOne 1

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