How severe is CVE-2003-1135?

CVE-2003-1135 has a CVSS 2.0 base score of 2.6, rated low severity.

Is CVE-2003-1135 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2003-1135?

CVE-2003-1135 affects Yahoo Messenger. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2003-1135?

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

When was CVE-2003-1135 published?

CVE-2003-1135 was published on 2003-12-31 and last updated on 2026-06-16.

CVE-2003-1135

CVE-2003-1135 is a low-severity vulnerability in Yahoo Messenger with a CVSS 2.0 base score of 2.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Low (CVSS 2.0 base score 2.6)
EPSS exploit prediction: 5% (90th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Yahoo Messenger
Published: 2003-12-31
Last modified: 2026-06-16

Description

Buffer overflow in Yahoo! Messenger 5.6 allows remote attackers to cause a denial of service (crash) via a file send request (sendfile) with a large number of "%" (percent) characters after the Yahoo ID.

Frequently asked questions

What is CVE-2003-1135?: Buffer overflow in Yahoo! Messenger 5.6 allows remote attackers to cause a denial of service (crash) via a file send request (sendfile) with a large number of "%" (percent) characters after the Yahoo ID.
How severe is CVE-2003-1135?: CVE-2003-1135 has a CVSS 2.0 base score of 2.6, rated low severity.
Is CVE-2003-1135 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2003-1135?: CVE-2003-1135 affects Yahoo Messenger. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2003-1135?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2003-1135 published?: CVE-2003-1135 was published on 2003-12-31 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:yahoo:messenger:5.6:*:*:*:*:*:*:*

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