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CVE-2025-53399

MEDIUM
6.9
CVSS Score
Published: August 1, 2025 at 12:00 AM UTC
Updated: July 21, 2026 at 07:36 PM UTC
1 product affected across 1 vendorRtpengine

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Severity
MEDIUM6.9
Exploit prediction
EPSS 6%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Rtpengine· Sipwise
60%
v < 13.4.1.1
Affected range stops below 13.4.1.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (7)

Source: [email protected]
https://github.com/EnableSecurity/advisories/tree/master/ES2025-01-rtpengine-improper-behavior-bleed-inject
Source: [email protected]
https://github.com/sipwise/rtpengine/commits/rfuchs/security/
Source: [email protected]
https://github.com/sipwise/rtpengine/releases/tag/mr13.4.1.1
Source: [email protected]
https://www.openwall.com/lists/oss-security/2025/07/31/1
Source: af854a3a-2127-422b-91ae-364da2661108
http://seclists.org/fulldisclosure/2025/Aug/1
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openwall.com/lists/oss-security/2025/07/31/1
Source: af854a3a-2127-422b-91ae-364da2661108
https://lists.debian.org/debian-lts-announce/2026/07/msg00033.html

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.9MEDIUMmitre
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-346

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