Severity: ElevatedAction: Be aware

Signal Vulnerability Lets Malicious Callers Block Hang-Ups

Affecting the open source calling library RingRTC, the bug prevented calls from ending properly.

Excerpt from the primary source: SecurityWeek

Who is affected

Developers

What you should do · Be aware

No immediate action is indicated. Share this with the relevant teams and watch for updates.

Automated guidance based on this story's classification. Check the linked advisories for specifics.

Sources

We link to original and authoritative sources. Headlines and excerpts belong to their publishers.

Original reporting

Signal Vulnerability Lets Malicious Callers Block Hang-Ups SecurityWeek · securityweek.com · Oct 22, 2026 · Primary source
Severity: HighAction: Patch

GitLab warns of new max severity code execution vulnerability

GitLab has released security patches for a maximum-severity Regular Expression Compiler flaw that can let remote attackers run arbitrary code on vulnerable servers.

Patch

Apply the vendor's security update for the affected products.

Severity: HighAction: Patch

Cisco Patches 34 Vulnerabilities Across Multiple Products

Critical-severity security defects could lead to command execution, authentication bypass, and XSS attacks.

Patch

Apply the vendor's security update for Cisco networking & security.