CVE-2019-25544

Name: CVE-2019-25544
Creator: NVD / NIST
Published: 2026-03-21T13:16:15.27+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.9/10EPSS 0.19%

Last modified Jun 17, 2026

CVE-2019-25544 is a medium-severity vulnerability rated 6.9/10 on the CVSS scale. 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.. EPSS estimates a 0.19% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

5.5/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS 4.0

6.9/10

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.19%

8.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-807

Affected Software

Vendor	Product	Versions
Pidgin	Pidgin	2.13.0

References

https://pidgin.im/Product
https://www.exploit-db.com/exploits/46930Exploit, VDB Entry
https://www.vulncheck.com/advisories/pidgin-denial-of-service-via-malformed-usernameThird Party Advisory

Timeline

Published: Mar 21, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2019-25544?

How severe is CVE-2019-25544?

CVE-2019-25544 has a CVSS score of 6.9/10 (MEDIUM severity). The EPSS model estimates a 0.19% probability of exploitation in the next 30 days.

How do I fix CVE-2019-25544?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-25544?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST