Memory corruption via unreferenced ICE callbacks
Published Mar 20, 2026 · Updated Mar 20, 2026
Use-after-free in Teluu PJPROJECT before 2.17 allows remote attackers to corrupt memory through ICE session traffic. The pj_ice_sess_send_data and pj_ice_sess_on_rx_pkt paths release the ICE group lock before invoking transport or application callbacks without first retaining a session reference, so concurrent destruction can free the session while callback processing continues. Reachability requires an application with ICE enabled and successful race timing; the vendor has not published a demonstrated end effect beyond the heap use-after-free.
Summary
What happened
Use-after-free in Teluu PJPROJECT before 2.17 allows remote attackers to corrupt memory through ICE session traffic. The pj_ice_sess_send_data and pj_ice_sess_on_rx_pkt paths release the ICE group lock before invoking transport or application callbacks without first retaining a session reference, so concurrent destruction can free the session while callback processing continues. Reachability requires an application with ICE enabled and successful race timing; the vendor has not published a demonstrated end effect beyond the heap use-after-free.
The record
- CVE
- CVE-2026-32942
- Published
- Mar 20, 2026
- Updated
- Mar 20, 2026
- Vendor
- PJSIP
- Product
- PJPROJECT
- Classifications
- CWE-416
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 20, 2026CVE publishedPublication date reported by the CVE source.
- Mar 20, 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.
- Affected versionversion=< 2.17
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Weakness, pattern, technique
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