CVE-2026-57159Network attack vectorHinoki check available

Remote memory corruption via unbounded payload-type indexing

Published Sep 4, 2026 · Updated Sep 4, 2026

Out-of-bounds access in Teluu PJPROJECT 2.17 and earlier allows remote attackers to corrupt memory or crash applications via crafted SDP. assign_pt_and_update_map() accepts payload-type values above 127 from SDP attributes and subtracts 96 before indexing fixed-size mapping tables. The path requires PJMEDIA_SDP_NEG_MAINTAIN_REMOTE_PT_MAP, which is disabled by default; demonstrated impact is memory corruption and application crash, not code execution.

CVSS severity8.4
High
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Out-of-bounds access in Teluu PJPROJECT 2.17 and earlier allows remote attackers to corrupt memory or crash applications via crafted SDP. assign_pt_and_update_map() accepts payload-type values above 127 from SDP attributes and subtracts 96 before indexing fixed-size mapping tables. The path requires PJMEDIA_SDP_NEG_MAINTAIN_REMOTE_PT_MAP, which is disabled by default; demonstrated impact is memory corruption and application crash, not code execution.

The record

CVE
CVE-2026-57159
Published
Sep 4, 2026
Updated
Sep 4, 2026
Vendor
PJSIP
Product
PJPROJECT
Classifications
CWE-129, CWE-787, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 4, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=< 673b978aab1fe3ab874247be32c871acc880cbeb

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

PJSIP · PJPROJECTversion=< 673b978aab1fe3ab874247be32c871acc880cbeb

Published CVSS scores

8.4GitHub CNACVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-129Improper Validation of Array Index
CWE-787Out-of-bounds Write
T1499Endpoint Denial of Service

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo