CVE-2026-29068Network attack vector

Unauthenticated application crash via excess RTP frames

Published Mar 6, 2026 · Updated Mar 6, 2026

Stack buffer overflow in PJPROJECT before 2.17 allows remote attackers to crash applications by sending crafted RTP payloads. The Opus, SILK, and Speex codec_parse functions trust the packet-derived frame count and write parsed frames past the caller-provided frames array capacity. Exposure requires an application to receive attacker-controlled RTP while using one of those codecs; the published impact is an application crash, not demonstrated code execution.

CVSS severity8.7
High
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack buffer overflow in PJPROJECT before 2.17 allows remote attackers to crash applications by sending crafted RTP payloads. The Opus, SILK, and Speex codec_parse functions trust the packet-derived frame count and write parsed frames past the caller-provided frames array capacity. Exposure requires an application to receive attacker-controlled RTP while using one of those codecs; the published impact is an application crash, not demonstrated code execution.

The record

CVE
CVE-2026-29068
Published
Mar 6, 2026
Updated
Mar 6, 2026
Vendor
PJSIP
Product
PJPROJECT
Classifications
CWE-121, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 6, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2.17

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

PJSIP · PJPROJECTversion=< 2.17

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
8.7GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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