Vulnerability in Pidgin
CVE-2019-25544
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.002 (7.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 7th percentile — 7.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Pidgin — versions 2.13.0
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/46930 (Exploit, VDB Entry, exploit)
- pidgin.im/ (Product, product)
- www.vulncheck.com/advisories/pidgin-denial-of-service-via-malformed-username (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2019-25544?
- CVE-2019-25544 is a medium-severity vulnerability in Pidgin, classified under CWE-807. CVSS score: 6.2/10. Published 2026-03-21.
- How severe is CVE-2019-25544?
- Medium severity. CVSS v3 base score is 6.2 out of 10.