Is CVE-2025-53399 in the CISA KEV catalog?

No. CVE-2025-53399 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the EPSS score for CVE-2025-53399?

CVE-2025-53399 has an EPSS score of 4.65% (91th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-53399?

Upgrade rtpengine on debian unstable to 12.5.1.35-1 or later.

CVE & CISA-KEV Catalog

CVE-2025-53399

UNSCOREDEPSS 91th pctl

NVD

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.

CWE-346

How to fix

Remediation Available

rtpengineDebian

Fixed in:12.5.1.35-1CVE-2025-53399

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3.1 Vector

No CVSS vector data available.

Exploit Intelligence

4.65%probability of exploitation in 30 days

91stpercentile

High risk: more likely to be exploited than 91% of all known CVEs.

References

Other references6

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-04.