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CVE-2010-3765

CRITICALCVSS 9.8/10Actively ExploitedEPSS 83.28%

Last modified

CVE-2010-3765 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Mozilla Firefox 3.5.x through 3.5.14 and 3.6.x through 3.6.11, Thunderbird 3.1.6 before 3.1.6 and 3.0.x before 3.0.10, and SeaMonkey 2.x before 2.0.10, when JavaScript is enabled, allows remote attackers to execute arbitrary code via vectors related to nsCSSFrameConstructor::ContentAppended, the appendChild method, incorrect index tracking, and the creation of multiple frames, which triggers memory corruption, as exploited in the wild in October 2010 by the Belmoo malware.. CISA has confirmed active exploitation in the wild. EPSS estimates a 83.28% chance of exploitation in the next 30 days.

Description

Mozilla Firefox 3.5.x through 3.5.14 and 3.6.x through 3.6.11, Thunderbird 3.1.6 before 3.1.6 and 3.0.x before 3.0.10, and SeaMonkey 2.x before 2.0.10, when JavaScript is enabled, allows remote attackers to execute arbitrary code via vectors related to nsCSSFrameConstructor::ContentAppended, the appendChild method, incorrect index tracking, and the creation of multiple frames, which triggers memory corruption, as exploited in the wild in October 2010 by the Belmoo malware.

Metrics

CVSS 3.1
9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
83.28%

99.6th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by .

Weakness Enumeration

Affected Software

VendorProductVersions
MozillaFirefox3.5
MozillaFirefox3.5.1
MozillaFirefox3.5.2
MozillaFirefox3.5.3
MozillaFirefox3.5.4
MozillaFirefox3.5.5
MozillaFirefox3.5.6
MozillaFirefox3.5.7
MozillaFirefox3.5.8
MozillaFirefox3.5.9
MozillaFirefox3.5.10
MozillaFirefox3.5.11
MozillaFirefox3.5.12
MozillaFirefox3.5.13
MozillaFirefox3.5.14
MozillaFirefox3.6
MozillaFirefox3.6.2
MozillaFirefox3.6.3
MozillaFirefox3.6.4
MozillaFirefox3.6.6
MozillaFirefox3.6.7
MozillaFirefox3.6.8
MozillaFirefox3.6.9
MozillaFirefox3.6.10
MozillaFirefox3.6.11
MozillaThunderbird3.0.1
MozillaThunderbird3.0.2
MozillaThunderbird3.0.3
MozillaThunderbird3.0.4
MozillaThunderbird3.0.5
MozillaThunderbird3.0.6
MozillaThunderbird3.0.7
MozillaThunderbird3.0.8
MozillaThunderbird3.0.9
MozillaThunderbird3.1.1
MozillaThunderbird3.1.2
MozillaThunderbird3.1.3
MozillaThunderbird3.1.4
MozillaThunderbird3.1.5
MozillaSeamonkey2.0
MozillaSeamonkey2.0.1
MozillaSeamonkey2.0.2
MozillaSeamonkey2.0.3
MozillaSeamonkey2.0.4
MozillaSeamonkey2.0.5
MozillaSeamonkey2.0.6
MozillaSeamonkey2.0.7
MozillaSeamonkey2.0.8
MozillaSeamonkey2.0.9

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2010-3765?
Mozilla Firefox 3.5.x through 3.5.14 and 3.6.x through 3.6.11, Thunderbird 3.1.6 before 3.1.6 and 3.0.x before 3.0.10, and SeaMonkey 2.x before 2.0.10, when JavaScript is enabled, allows remote attackers to execute arbitrary code via vectors related to nsCSSFrameConstructor::ContentAppended, the appendChild method, incorrect index tracking, and the creation of multiple frames, which triggers memory corruption, as exploited in the wild in October 2010 by the Belmoo malware.
How severe is CVE-2010-3765?
CVE-2010-3765 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 83.28% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.
How do I fix CVE-2010-3765?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2010-3765?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST