# CVE-2025-53399: rtpengine: In Sipwise rtpengine before 13.4.1.1, an origin-validation error in the endpoint-learning logic of the media-relay co...

CVE-2025-53399 is fixed in rtpengine on 1 platform, first by DEBIAN-CVE-2025-53399, released August 1, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2025-53399
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0717
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 1, 2025

## Description

In Sipwise rtpengine before 13.4.1.1, an origin-validation error in the endpoint-learning logic of the media-relay core allows remote attackers to inject or intercept RTP/SRTP media streams via RTP packets (except when the relay is configured for strict source and learning disabled). Version 13.4.1.1 fixes the heuristic mode by limiting exposure to the first five packets, and introduces a recrypt flag that fully prevents SRTP attacks when both mitigations are enabled.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | rtpengine Debian 12.15 (bookworm) | 10.5.3.5-1+deb12u1 | [DEBIAN-CVE-2025-53399](https://patchblox.com/security/data/fix/linux/debian-cve-2025-53399.md) | Aug 1, 2025 |
| Linux | rtpengine Debian 14 | 12.5.1.35-1 | [DEBIAN-CVE-2025-53399](https://patchblox.com/security/data/fix/linux/debian-cve-2025-53399.md) | Aug 1, 2025 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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