cve.bz

CVE-2021-21375

6.5 mediumEPSS 2.1%

Medium (6.5). EPSS 2.1% chance of exploitation in the next 30 days.

PJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. In PJSIP version 2.10 and earlier, after an initial INVITE has been sent, when two 183 responses are received, with the first one causing negotiation failure, a crash will occur. This results in a denial of service.

Severity

CVSS 3.1

6.5 medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS
2.1% chance of exploitation in the next 30 days; higher than 81% of CVEs (scores of 2026-10-31)
CWEs
CWE-754, CWE-400
Published
Modified
Record from
the NVD, synced

Affected

References

Check your stackJSON