Is CVE-2010-1261 in the CISA KEV catalog?

No. CVE-2010-1261 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2010-1261?

CVE-2010-1261 has a CVSS v2 base score of 9.3 (HIGH).

What is the EPSS score for CVE-2010-1261?

CVE-2010-1261 has an EPSS score of 24.92% (98th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2010-1261

HIGHEPSS 98th pctl

9.3

CVSS v2

NVD

Description

The IE8 Developer Toolbar in Microsoft Internet Explorer 8 SP1, SP2, and SP3 allows user-assisted remote attackers to execute arbitrary code by accessing an object that (1) was not properly initialized or (2) is deleted, leading to memory corruption, aka "Uninitialized Memory Corruption Vulnerability."

CWE-94Code Injection

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

24.92%probability of exploitation in 30 days

98thpercentile

Very high risk: more likely to be exploited than 98% of all known CVEs.

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.