SEPTEMBER 19, 2026
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Case File

CVE-2026-49420

HIGH · CVSS 8.8 EPSS 0.27% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-19 · Last synced 2026-09-18

CyberRota Analysis

AI-Generated

The RTSP handler in libalias is vulnerable due to improper handling of outgoing packets, allowing crafted RTSP traffic to overflow a fixed-length stack buffer. This can lead to remote code execution in the kernel or within the natd process, which typically operates with root privileges. Organizations utilizing NAT gateways with libalias should prioritize addressing this vulnerability to mitigate potential exploitation risks.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
remote code execution code execution

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-49420
Severity
HIGH
CVSS
8.8
EPSS
0.27%

Original NVD Description

The RTSP handler in libalias rewrote outgoing packets into a fixed-length stack buffer without checking whether the rewritten data fit in the buffer, or whether the result fit back in the original packet. A host sending crafted RTSP traffic from inside a NAT gateway using libalias can overflow a stack buffer, potentially achieving remote code execution in the kernel (when using ipfw(4) NAT) or in the natd(8) process (which generally runs as the root user).

Related CVEs

Other vulnerabilities affecting the same vendor(s)