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Vulnerability record · CVE-2016-2377 · published 6 January 2017

CVE-2016-2377: Pidgin memory buffer overflow vulnerability

Pidgin · Pidgin

A buffer overflow vulnerability exists in the handling of the MXIT protocol in Pidgin. Specially crafted MXIT data sent by the server could potentially result in an out-of-bounds write of one byte. A malicious server can send a negative content-length in response to a HTTP request triggering the vulnerability.

8.1 CVSS 3.0 High EPSS 2.6% · top 15.3% CWE-119 · Memory buffer overflow
8.1CVSS 3.0 base score, v2 6.8
2.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
12References
17 Jun 2026Last modified by NVD

Description

A buffer overflow vulnerability exists in the handling of the MXIT protocol in Pidgin. Specially crafted MXIT data sent by the server could potentially result in an out-of-bounds write of one byte. A malicious server can send a negative content-length in response to a HTTP request triggering the vulnerability.

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

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.debian.org/security/2016/dsa-3620 Third Party Advisory
http://www.pidgin.im/news/security/?id=93 PatchVendor Advisory
http://www.securityfocus.com/bid/91335 Third Party AdvisoryVDB Entry
http://www.talosintelligence.com/reports/TALOS-2016-0119/ Technical DescriptionThird Party Advisory
http://www.ubuntu.com/usn/USN-3031-1 Third Party Advisory
https://security.gentoo.org/glsa/201701-38
http://www.debian.org/security/2016/dsa-3620 Third Party Advisory
http://www.pidgin.im/news/security/?id=93 PatchVendor Advisory
http://www.securityfocus.com/bid/91335 Third Party AdvisoryVDB Entry
http://www.talosintelligence.com/reports/TALOS-2016-0119/ Technical DescriptionThird Party Advisory
http://www.ubuntu.com/usn/USN-3031-1 Third Party Advisory
https://security.gentoo.org/glsa/201701-38

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Source: NIST National Vulnerability Database (record CVE-2016-2377), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.