CVE-2016-2851

9.8 criticalEPSS 24%

Critical (9.8). EPSS 24% chance of exploitation in the next 30 days.

Integer overflow in proto.c in libotr before 4.1.1 on 64-bit platforms allows remote attackers to cause a denial of service (memory corruption and application crash) or execute arbitrary code via a series of large OTR messages, which triggers a heap-based buffer overflow.

Severity

CVSS 3.0

9.8 critical

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 24% chance of exploitation in the next 30 days; higher than 97% of CVEs (scores of 2026-10-31)
CWE: CWE-119
Published: 2016-04-07
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

cypherpunks:libotr
debian:debian_linux
opensuse:leap
opensuse:opensuse

References

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00021.html
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00030.html
http://seclists.org/fulldisclosure/2016/Mar/21
http://www.debian.org/security/2016/dsa-3512
http://www.securityfocus.com/archive/1/537745/100/0/threaded

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