PJSIP: Stack buffer overflow in Opus codec parser
Published Mar 6, 2026
8.7
HIGHCVSS 4.0
EPSS 0.53%
Description
PJSIP is a free and open source multimedia communication library written in C. Prior to version 2.17, there is a stack buffer overflow vulnerability when pjmedia-codec parses an RTP payload contain more frames than the caller-provided frames can hold. This issue has been patched in version 2.17.
Affected products
-
- Version < 2.17StatusaffectedConstraints-
- Version
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Red Hat statement
IMPORTANT: A stack buffer overflow flaw exists in the PJSIP library's Opus codec parser. This vulnerability occurs when processing specially crafted RTP payloads containing more frames than the allocated buffer can hold, potentially leading to denial of service or arbitrary code execution in applications utilizing PJSIP for Opus codec handling.
Red Hat mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Metrics
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
1 other source (NVD) ▾
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
1 other source (Red Hat) ▾
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
YesTechnical Impact
PartialDecision
n/aAssessed Mar 9, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
Mar–Oct 2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (3 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.53% (0.00527) | 42.56th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.31% (0.00314) | 22.88th | v5 (v2026.06.15) |
| Mar 6, 2026 | 0.04% (0.00042) | 12.67th | v4 (v2025.03.14) |
References (6)
- https://access.redhat.com/security/cve/CVE-2026-29068 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2445115 Issue Tracking
- https://github.com/pjsip/pjproject/commit/6c9024511bf5307ff72efde1f90c9a2a226d8967 x_refsource_MISCPatch
- https://github.com/pjsip/pjproject/security/advisories/GHSA-pqww-jrxr-457f x_refsource_CONFIRMPatchVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-29068
- https://www.cve.org/CVERecord?id=CVE-2026-29068
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2026-29068 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2445115 | Issue Tracking | |
| https://github.com/pjsip/pjproject/commit/6c9024511bf5307ff72efde1f90c9a2a226d8967 | x_refsource_MISCPatch | |
| https://github.com/pjsip/pjproject/security/advisories/GHSA-pqww-jrxr-457f | x_refsource_CONFIRMPatchVendor Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2026-29068 | ||
| https://www.cve.org/CVERecord?id=CVE-2026-29068 |
Change history (0)
No recorded changes yet.