# PJSIP Pjproject vulnerabilities

Source: https://junglewise.ai/threats/technologies/pjproject  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/pjproject.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 7 vulnerabilities in PJSIP Pjproject: 0 in the last 7 days and 7 in the last 90 days, 2 of them critical and 0 exploited in the wild. The most recent, CVE-2026-57166, was published on 4 September 2026. Nothing was published in the last eight weeks.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 7
- All time: 7 (2 critical, 0 exploited in the wild)

## About PJSIP Pjproject

Open-source Session Initiation Protocol (SIP) library for VoIP communication.

## Latest PJSIP Pjproject vulnerabilities

- [CVE-2026-57166: PJSIP stack buffer overflow in telnet CLI](https://junglewise.ai/threats/cve-2026-57166-pjsip-stack-buffer-overflow-in-telnet-cli) (medium, CVSS 5.3, published 4 Sep 2026)
- [CVE-2026-57164: PJSIP heap buffer overflow in HTTP client](https://junglewise.ai/threats/cve-2026-57164-pjsip-heap-buffer-overflow-in-http-client) (medium, CVSS 5.9, published 4 Sep 2026)
- [CVE-2026-57163: PJSIP stack buffer overflow in GnuTLS TLS backend](https://junglewise.ai/threats/cve-2026-57163-pjsip-stack-buffer-overflow-in-gnutls-tls-backend) (critical, CVSS 9.1, published 4 Sep 2026)
- [CVE-2026-57162: PJSIP stack buffer overflow in SRTP/SDES SDP processing](https://junglewise.ai/threats/cve-2026-57162-pjsip-stack-buffer-overflow-in-srtp-sdes-sdp-processing) (critical, CVSS 9.1, published 4 Sep 2026)
- [CVE-2026-57161: PJSIP stack buffer overflow in Service-Route header processing](https://junglewise.ai/threats/cve-2026-57161-pjsip-stack-buffer-overflow-in-service-route-header-processing) (high, CVSS 8.2, published 4 Sep 2026)
- [CVE-2026-57160: PJSIP buffer overflow in generic array header serialization](https://junglewise.ai/threats/cve-2026-57160-pjsip-buffer-overflow-in-generic-array-header-serialization) (medium, CVSS 5.3, published 4 Sep 2026)
- [CVE-2026-57159: PJSIP out-of-bounds read/write in SDP negotiator](https://junglewise.ai/threats/cve-2026-57159-pjsip-out-of-bounds-read-write-in-sdp-negotiator) (high, CVSS 7.5, published 4 Sep 2026)

## Most severe PJSIP Pjproject vulnerabilities

- [CVE-2026-57162: PJSIP stack buffer overflow in SRTP/SDES SDP processing](https://junglewise.ai/threats/cve-2026-57162-pjsip-stack-buffer-overflow-in-srtp-sdes-sdp-processing) (critical, CVSS 9.1, published 4 Sep 2026)
- [CVE-2026-57163: PJSIP stack buffer overflow in GnuTLS TLS backend](https://junglewise.ai/threats/cve-2026-57163-pjsip-stack-buffer-overflow-in-gnutls-tls-backend) (critical, CVSS 9.1, published 4 Sep 2026)
- [CVE-2026-57161: PJSIP stack buffer overflow in Service-Route header processing](https://junglewise.ai/threats/cve-2026-57161-pjsip-stack-buffer-overflow-in-service-route-header-processing) (high, CVSS 8.2, published 4 Sep 2026)
- [CVE-2026-57159: PJSIP out-of-bounds read/write in SDP negotiator](https://junglewise.ai/threats/cve-2026-57159-pjsip-out-of-bounds-read-write-in-sdp-negotiator) (high, CVSS 7.5, published 4 Sep 2026)
- [CVE-2026-57164: PJSIP heap buffer overflow in HTTP client](https://junglewise.ai/threats/cve-2026-57164-pjsip-heap-buffer-overflow-in-http-client) (medium, CVSS 5.9, published 4 Sep 2026)
- [CVE-2026-57166: PJSIP stack buffer overflow in telnet CLI](https://junglewise.ai/threats/cve-2026-57166-pjsip-stack-buffer-overflow-in-telnet-cli) (medium, CVSS 5.3, published 4 Sep 2026)
- [CVE-2026-57160: PJSIP buffer overflow in generic array header serialization](https://junglewise.ai/threats/cve-2026-57160-pjsip-buffer-overflow-in-generic-array-header-serialization) (medium, CVSS 5.3, published 4 Sep 2026)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 7 | 2 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Other PJSIP technologies

- [PJSIP](https://junglewise.ai/threats/technologies/pjsip-pjsip): 4 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "PJSIP Pjproject vulnerabilities", https://junglewise.ai/threats/technologies/pjproject, 9 November 2026.