How severe is CVE-2005-3891?

CVE-2005-3891 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2005-3891 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2005-3891?

CVE-2005-3891 affects Gadu-gadu Gadu-gadu Instant Messenger. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2005-3891?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2005-3891 published?

CVE-2005-3891 was published on 2005-11-29 and last updated on 2026-06-16.

CVE-2005-3891

CVE-2005-3891 is a high-severity vulnerability in Gadu-gadu Gadu-gadu Instant Messenger with a CVSS 2.0 base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.8)
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Gadu-gadu Gadu-gadu Instant Messenger
Published: 2005-11-29
Last modified: 2026-06-16

Description

Stack-based buffer overflow in Gadu-Gadu 7.20 allows remote attackers to cause a denial of service (crash) via an image filename between exactly 192 to 200 characters, which does not account for the "imgcache\" string that is added to the end of the buffer.

Frequently asked questions

What is CVE-2005-3891?: Stack-based buffer overflow in Gadu-Gadu 7.20 allows remote attackers to cause a denial of service (crash) via an image filename between exactly 192 to 200 characters, which does not account for the "imgcache\" string that is added to the end of the buffer.
How severe is CVE-2005-3891?: CVE-2005-3891 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2005-3891 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2005-3891?: CVE-2005-3891 affects Gadu-gadu Gadu-gadu Instant Messenger. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2005-3891?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2005-3891 published?: CVE-2005-3891 was published on 2005-11-29 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:gadu-gadu:gadu-gadu_instant_messenger:7.20:*:*:*:*:*:*:*

More vulnerabilities in Gadu-gadu Gadu-gadu Instant Messenger

CVE-2004-1232 — Critical (CVSS 10.0): Stack-based buffer overflow in the code that sends images in Gadu-Gadu allows remote attackers to execute arbitrary…
CVE-2005-3890 — High (CVSS 7.8): Gadu-Gadu 7.20 allows remote attackers to cause a denial of service (crash and configuration loss) via a page with a…
CVE-2005-3888 — High (CVSS 7.8): Memory leak in Gadu-Gadu 7.20 allows remote attackers to cause a denial of service via multiple DCC packets with a code…
CVE-2004-1229 — High (CVSS 7.5): Cross-site scripting vulnerability in the parser for Gadu-Gadu allows remote attackers to inject arbitrary web script…
CVE-2004-1676 — High (CVSS 7.5): Heap-based buffer overflow in the image sending feature in Gadu-Gadu 6.0 build 149 allows remote attackers to execute…
CVE-2005-3887 — Medium (CVSS 5.4): Gadu-Gadu 7.20 does not properly handle MS-DOS device names in filenames, which allows remote attackers to (1) cause a…

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