CVE-2026-20230

ile no official fix is available. The two actively exploited zero-days addressed during this month's Patch Tuesday are: CVE-2026-56155 - Active Directory Federation Services Elevation of Privilege Vulnerability Microsoft has patched an actively exploited vulnerability in Active Directory Federation Services that grants administrative privileges. "Insuf

A PoC exploit has been available since public disclosure, and the first exploitation attempts were observed last week.

isco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-ssrf-cXPnHcW Security Impact Rating: Critical CVE: CVE-2026-20230

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Here’s an overview of some of last week’s most interesting news, articles, interviews and videos: Encrypted DNS still tells an eavesdropper where to look Encrypted DNS runs across much of the Internet. DNS over TLS, HTTPS, and QUIC keep the contents of a query away from anyone watching a network link. The encryption covers the message inside each packet. The packet still carries plaintext headers, and those values mark a flow as DNS. Agent Beacon: … More →

U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds Cisco and PTC Windchill and FlexPLM flaws to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added Cisco and PTC Windchill and FlexPLM flaws to its Known Exploited Vulnerabilities (KEV) catalog. The two flaws added to the catalog are: CVE-2026-12569 is a critical remote […]

wo new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog , based on evidence of active exploitation. CVE-2026-12569 PTC Windchill and FlexPLM Improper Input Validation Vulnerability CVE-2026-20230 Cisco Unified Communications Manager Server-Side Request Forgery (SSRF) Vulnerability These types of vulnerabilities are frequent attack v

CVE-2026-20245, the 7th Cisco SD-WAN vulnerability exploited in 2026, was used for months prior to its disclosure and patching.

CVE-2026-20230 is a critical server-side request forgery vulnerability affecting Cisco Unified CM. Successful exploitation may lead to root-level compromise, and active exploitation has been reported.

Attackers exploit Cisco Unified CM flaw (CVE-2026-20230) allowing unauth HTTP requests to trigger SSRF, write files, and gain root access Cisco Unified Communications Manager has a serious vulnerability, tracked as CVE-2026-20230 (CVSS score of 8.6), that attackers are already exploiting. The flaw, caused by improper validation of certain HTTP requests, allows a remote attacker without […]

CVE-2026-20230, a server-side request forgery (SSRF) vulnerability affecting Cisco’s Unified Communications Manager (Unified CM), is being exploited to drop webshells and achieve remote code execution capability on the underlying server. “Our honeypots are seeing automated sweeps dropping webshells, all via Tor,” threat intelligence firm Defused warned today, after observing initial attacks over the weekend. “The observed chain abuses the WebDialer SSRF to deploy a rogue Apache Axis service, uses that service to write a first-stage … More →

with genuinely-formatted file:// file-write payloads landing on our decoys,” Defused said on X . The flaw is tracked as CVE-2026-20230 and carries a CVSS base score of 8.6. Cisco published the advisory and patches on June 3, when it stated it was not aware of any malicious use of the vulnerability at the time of disclosure. “This vulnerability is due t

Linked URL: https://defusedcyber.com/cucm-cve-2026-20230-fullchain-sweep | Posted by waihtis | 2 points | 0 comments

Cisco noted that a PoC had been available for CVE-2026-20230 when it announced patches in early June.

eft. VULNERABILITIES AND PATCHES Google has released its June Android security patch for 124 vulnerabilities, including CVE-2025-48595, a high-severity Android Framework flaw under exploitation. Local attackers can use the vulnerability to gain code execution and escalate privileges on devices running Android 14 or later. Cisco has released patches for

Cisco patched a critical Unified CM flaw with public PoC code that allows unauthenticated attackers to launch SSRF attacks remotely. Cisco has addressed a high-severity vulnerability, tracked as CVE-2026-20230, affecting Unified CM and Unified CM SME. The flaw, caused by improper validation of certain HTTP requests, allows a remote attacker without authentication to perform server-side […]

The high-severity flaw can be exploited remotely, without authentication, in server-side request forgery (SSRF) attacks.

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