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CVE-2010-3765

critical · 9.8Actively exploited

On the CISA Known Exploited Vulnerabilities catalog

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Added 2025-10-06Remediation due 2025-10-27

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.

9.8
CVSS
83.2%
EPSS (exploit prob.)
100th
EPSS percentile
2010-10-28
Published

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

Weaknesses

CWE-119

Affected products

VendorProductAffected versions
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

Check a specific version with /api/v1/cve/match.

References

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2010-3765