CVE-2019-25544 MEDIUM

CVE-2019-25544: Pidgin 2.13.0 Denial of Service via Malformed Username

Vendor Pidgin

Product Pidgin

Weakness CWE-807

Published March 21, 2026

Last update March 24, 2026

View on NVD All CVEs

CVSS base score

6.9/10

Attack vector Local

Attack complexity Low

Privileges required None

User interaction None

Confidentiality —

Integrity —

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

Pidgin 2.13.0 contains a denial of service vulnerability that allows local attackers to crash the application by providing an excessively long username string during account creation. Attackers can input a buffer of 1000 characters in the username field and trigger a crash when joining a chat, causing the application to become unavailable.

Key dates

02Disclosure timeline

March 21, 2026 CVE published

March 24, 2026 Record updated

External resources

03References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2019-25544 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/807.html

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04Related CVE

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