How severe is CVE-2005-1891?

CVE-2005-1891 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2005-1891 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2005-1891?

CVE-2005-1891 affects Aol Aim. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2005-1891?

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-2005-1891 published?

CVE-2005-1891 was published on 2005-06-09 and last updated on 2026-06-16.

CVE-2005-1891

CVE-2005-1891 is a high-severity vulnerability in Aol Aim with a CVSS 3.x base score of 7.5. 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-191.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-191
Affected product: Aol Aim
Published: 2005-06-09
Last modified: 2026-06-16

Description

The GIF parser in ateimg32.dll in AOL Instant Messenger (AIM) 5.9.3797 and earlier allows remote attackers to cause a denial of service (crash) via a malformed buddy icon that causes an integer underflow in a loop counter variable.

Frequently asked questions

What is CVE-2005-1891?: The GIF parser in ateimg32.dll in AOL Instant Messenger (AIM) 5.9.3797 and earlier allows remote attackers to cause a denial of service (crash) via a malformed buddy icon that causes an integer underflow in a loop counter variable.
How severe is CVE-2005-1891?: CVE-2005-1891 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2005-1891 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2005-1891?: CVE-2005-1891 affects Aol Aim. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2005-1891?: 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-2005-1891 published?: CVE-2005-1891 was published on 2005-06-09 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:aol:aim:*:*:*:*:*:*:*:*

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