CVE-2026-28799
published 2026-03-06CVE-2026-28799: PJSIP is a free and open source multimedia communication library written in C. Prior to version 2.17, a heap use-after-free vulnerability exists in PJSIP's…
PriorityP341high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.29%
20.2th percentile
PJSIP is a free and open source multimedia communication library written in C. Prior to version 2.17, a heap use-after-free vulnerability exists in PJSIP's event subscription framework (evsub.c) that is triggered during presence unsubscription (SUBSCRIBE with Expires=0). This issue has been patched in version 2.17.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| pjsip | pjproject | < 2.17 | 2.17 |
| pjsip | pjsip | < 2.17 | 2.17 |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvdv4.08.7HIGHCVSS: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
osv8.7HIGH
vendor_redhat8.7HIGH
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Red Hat
PJSIP: PJSIP: Denial of Service via heap use-after-free in event subscription
vendor_redhat·2026-03-06·CVSS 8.7
CVE-2026-28799 [HIGH] CWE-825 PJSIP: PJSIP: Denial of Service via heap use-after-free in event subscription
PJSIP: PJSIP: Denial of Service via heap use-after-free in event subscription
PJSIP is a free and open source multimedia communication library written in C. Prior to version 2.17, a heap use-after-free vulnerability exists in PJSIP's event subscription framework (evsub.c) that is triggered during presence unsubscription (SUBSCRIBE with Expires=0). This issue has been patched in version 2.17.
A flaw was found in PJSIP. A remote attacker can exploit a heap use-after-free vulnerability within the event subscription framework by sending a specially crafted message during presence unsubscription. This can lead to a denial of service, making the affected system unavailable.
Statement: IMPORTANT: A heap use-after-free vulnerability in PJSIP's event subscription framework allows a remote attack
OSV
CVE-2026-28799: PJSIP is a free and open source multimedia communication library written in C
osv·2026-03-06·CVSS 8.7
CVE-2026-28799 [HIGH] CVE-2026-28799: PJSIP is a free and open source multimedia communication library written in C
PJSIP is a free and open source multimedia communication library written in C. Prior to version 2.17, a heap use-after-free vulnerability exists in PJSIP's event subscription framework (evsub.c) that is triggered during presence unsubscription (SUBSCRIBE with Expires=0). This issue has been patched in version 2.17.
No detection rules found.
No public exploits indexed.
2026-03-06
Published