Is CVE-2016-2851 actively exploited?

CVE-2016-2851 has no public evidence of in-the-wild exploitation as of 2025-04-12.

What is the CVSS score for CVE-2016-2851?

CVE-2016-2851 has a CVSS score of 9.8 (CRITICAL severity). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2016-2851?

Patch guidance is available from debian security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2016-2851.

Fix CVE-2016-2851 - CRITICAL debian debian linux

Q: Which products are affected by CVE-2016-2851?

5 products: debian debian linux, debian debian linux, opensuse leap, opensuse opensuse, cypherpunks libotr.

Description

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.

CVSS Metrics

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-119 · Memory Buffer Errors

Metadata

Primary Vendor: DEBIAN
Published: 4/7/2016
Last Modified: 4/12/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

debian : debian_linuxdebian : debian_linuxopensuse : leapopensuse : opensusecypherpunks : libotr

Remediation Guidance

Executive Summary

Cite this page

CVE-2016-2851. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2016-2851

View on NIST NVD

CVE-2016-2851 vulnerability