How severe is CVE-2019-25544?

CVE-2019-25544 has a CVSS 3.x base score of 6.2, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2019-25544 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-25544?

CVE-2019-25544 affects Pidgin. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-25544?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2019-25544 have an EU (EUVD) identifier?

Yes. CVE-2019-25544 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2019-19837.

When was CVE-2019-25544 published?

CVE-2019-25544 was published on 2026-03-21 and last updated on 2026-06-17.

CVE-2019-25544

CVE-2019-25544 is a medium-severity vulnerability in Pidgin with a CVSS 3.x base score of 6.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-807.

Key facts

Severity: Medium (CVSS 3.x base score 6.2)
CVSS v4: 6.9
EPSS exploit prediction: 0% (8th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2019-19837
Weakness: CWE-807
Affected product: Pidgin
Published: 2026-03-21
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2019-25544?: CVE-2019-25544 has a CVSS 3.x base score of 6.2, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2019-25544 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-25544?: CVE-2019-25544 affects Pidgin. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-25544?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2019-25544 have an EU (EUVD) identifier?: Yes. CVE-2019-25544 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2019-19837.
When was CVE-2019-25544 published?: CVE-2019-25544 was published on 2026-03-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:pidgin:pidgin:2.13.0:*:*:*:*:*:*:*

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