CVE-2025-53399
CVE-2025-53399 is a medium-severity vulnerability with a CVSS 4.0 base score of 6.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-346.
Key facts
- Severity: Medium (CVSS 4.0 base score 6.9)
- EPSS exploit prediction: 5% (91st percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-23331
- Weakness: CWE-346
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2025-53399?
- 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.
- How severe is CVE-2025-53399?
- CVE-2025-53399 has a CVSS 4.0 base score of 6.9, rated medium severity.
- Is CVE-2025-53399 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2025-53399?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2025-53399 have an EU (EUVD) identifier?
- Yes. CVE-2025-53399 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-23331.
- When was CVE-2025-53399 published?
- CVE-2025-53399 was published on 2025-08-01 and last updated on 2026-06-17.
References
- https://github.com/EnableSecurity/advisories/tree/master/ES2025-01-rtpengine-improper-behavior-bleed-inject
- https://github.com/sipwise/rtpengine/commits/rfuchs/security/
- https://github.com/sipwise/rtpengine/releases/tag/mr13.4.1.1
- https://www.openwall.com/lists/oss-security/2025/07/31/1
- http://seclists.org/fulldisclosure/2025/Aug/1
- http://www.openwall.com/lists/oss-security/2025/07/31/1
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