CVE-2010-3765: Mozilla Multiple Products Remote Code Execution Vulnerability
Advisory generated from the CVE record, CISA, Exploit Observer and VEDAS: what it is, whether it is exploited, who is affected, and how to fix and detect it.
Generated by VEDAS. Scores as of 2026-11-01 19:19 UTC. Rebuilt every few hours from cve-scores, CISA KEV and vedas-signatures. How this works and its limits.
What it is
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.
Description quoted from the CVE record (assigned by mitre, published 2010-10-27).
Weakness: CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
How it can be exploited
Exploitable over the network with low attack complexity needing no privileges and no user interaction. Impact: confidentiality high, integrity high, availability high. CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA assessment (SSVC): CISA assesses exploitation as active. Automatable: yes. Technical impact: total.
- On CISA KEV since
- 2025-10-06
- US federal deadline
- 2025-10-27
- Ransomware use
- Not known
Public exploit evidence (Exploit Observer)
Also known as: CNNVD-201010-404, EDB-15341, EDB-15342, EDB-15352, EDB-16509, EUVD-2010-3744, GHSA-cmrc-q43h-xrrq
VEDAS cluster: VEDAS:ADMINISTRATORANT
Exploit Observer links 4 pieces of public exploit code or detection modules that name this CVE or one of its aliases.
Exploit code and modules (4)
Code that names this CVE. A repository can be a working exploit, a scanner, a fake or malware; read it before running anything.
- Exploit-DB: https://www.exploit-db.com/raw/15341
- Exploit-DB: https://www.exploit-db.com/raw/15342
- Exploit-DB: https://www.exploit-db.com/raw/15352
- Exploit-DB: https://www.exploit-db.com/raw/16509
Vulnerability databases and vendor advisories (8)
Catalogue entries, not exploit evidence.
- Vulnerability database or vendor advisory: https://access.redhat.com/security/cve/cve-2010-3765
- Vulnerability database or vendor advisory: https://euvd.enisa.europa.eu/enisa/EUVD-2010-3744
- Vulnerability database or vendor advisory: https://github.com/advisories/GHSA-cmrc-q43h-xrrq
- Vulnerability database or vendor advisory: https://linux.oracle.com/cve/CVE-2010-3765.html
- Vulnerability database or vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2010-3765
- Vulnerability database or vendor advisory: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2010-3765
- Vulnerability database or vendor advisory: https://www.cnnvd.org.cn/home/globalSearch?keyword=CNNVD-201010-404
- Vulnerability database or vendor advisory: https://www.suse.com/security/cve/CVE-2010-3765
1837 more references returned by Exploit Observer did not name this CVE or an alias, so they are left out.
VEDAS data as of 2026-11-01T17:12 UTC; fetched 2026-11-02.
Live scores
- EPSS
- 0.832
very likely to be attacked soon - VEDAS
- 0.983
strong exploit evidence - On CISA KEV
- Yes, since 2025-10-06
- Detection rule
- None yet
Thin horizontal line: the “likely” (EPSS 0.10) or “strong” (VEDAS 0.90) threshold. Shaded “no data” areas are periods when cve-scores did not publish. The vertical line is the day CISA added it to its exploited list.
VEDAS flagged this bug about 50 days before CISA confirmed attacks.
Who is affected
| Product | Affected | Not affected |
|---|---|---|
| Not stated | version n/a | Not stated |
Version ranges exactly as the CVE record states them. “Before X” means X is the first fixed version.
How to fix it
CISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Vendor guidance:
- RHSA-2010:0812 (vendor-advisory, x_refsource_REDHAT)
- RHSA-2010:0896 (vendor-advisory, x_refsource_REDHAT)
- RHSA-2010:0808 (vendor-advisory, x_refsource_REDHAT)
- FEDORA-2010-17105 (vendor-advisory, x_refsource_FEDORA)
- USN-1011-3 (vendor-advisory, x_refsource_UBUNTU)
- USN-1011-1 (vendor-advisory, x_refsource_UBUNTU)
- USN-1011-2 (vendor-advisory, x_refsource_UBUNTU)
- RHSA-2010:0809 (vendor-advisory, x_refsource_REDHAT)
9 more
- MDVSA-2010:219 (vendor-advisory, x_refsource_MANDRIVA)
- DSA-2124 (vendor-advisory, x_refsource_DEBIAN)
- MDVSA-2010:213 (vendor-advisory, x_refsource_MANDRIVA)
- FEDORA-2010-16883 (vendor-advisory, x_refsource_FEDORA)
- SSA:2010-305-01 (vendor-advisory, x_refsource_SLACKWARE)
- RHSA-2010:0810 (vendor-advisory, x_refsource_REDHAT)
- FEDORA-2010-16897 (vendor-advisory, x_refsource_FEDORA)
- RHSA-2010:0861 (vendor-advisory, x_refsource_REDHAT)
- FEDORA-2010-16885 (vendor-advisory, x_refsource_FEDORA)
How to detect it
There is no open VEDAS detection rule for this bug yet. It is listed on the detection gaps page if CISA has confirmed attacks.
References
Vendor advisories and patches
- RHSA-2010:0812 (vendor-advisory, x_refsource_REDHAT)
- RHSA-2010:0896 (vendor-advisory, x_refsource_REDHAT)
- RHSA-2010:0808 (vendor-advisory, x_refsource_REDHAT)
- FEDORA-2010-17105 (vendor-advisory, x_refsource_FEDORA)
- USN-1011-3 (vendor-advisory, x_refsource_UBUNTU)
- USN-1011-1 (vendor-advisory, x_refsource_UBUNTU)
- USN-1011-2 (vendor-advisory, x_refsource_UBUNTU)
- RHSA-2010:0809 (vendor-advisory, x_refsource_REDHAT)
- MDVSA-2010:219 (vendor-advisory, x_refsource_MANDRIVA)
- DSA-2124 (vendor-advisory, x_refsource_DEBIAN)
- MDVSA-2010:213 (vendor-advisory, x_refsource_MANDRIVA)
- FEDORA-2010-16883 (vendor-advisory, x_refsource_FEDORA)
5 more
- SSA:2010-305-01 (vendor-advisory, x_refsource_SLACKWARE)
- RHSA-2010:0810 (vendor-advisory, x_refsource_REDHAT)
- FEDORA-2010-16897 (vendor-advisory, x_refsource_FEDORA)
- RHSA-2010:0861 (vendor-advisory, x_refsource_REDHAT)
- FEDORA-2010-16885 (vendor-advisory, x_refsource_FEDORA)
Exploits and technical analysis
- 41965 (third-party-advisory, x_refsource_SECUNIA)
- 41975 (third-party-advisory, x_refsource_SECUNIA)
- 15341 (exploit, x_refsource_EXPLOIT-DB)
- 41761 (third-party-advisory, x_refsource_SECUNIA)
- 41969 (third-party-advisory, x_refsource_SECUNIA)
- 42867 (third-party-advisory, x_refsource_SECUNIA)
- 42043 (third-party-advisory, x_refsource_SECUNIA)
- 41966 (third-party-advisory, x_refsource_SECUNIA)
- 42008 (third-party-advisory, x_refsource_SECUNIA)
- 15352 (exploit, x_refsource_EXPLOIT-DB)
- 42003 (third-party-advisory, x_refsource_SECUNIA)
- 15342 (exploit, x_refsource_EXPLOIT-DB)
Government sources
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2010-3765 (government-resource)
Other references
- 44425 (vdb-entry, x_refsource_BID)
- https://bugzilla.mozilla.org/show_bug.cgi?id=607222#c53 (x_refsource_MISC)
- ADV-2010-2837 (vdb-entry, x_refsource_VUPEN)
- https://bugzilla.redhat.com/show_bug.cgi?id=646997 (x_refsource_CONFIRM)
- http://support.avaya.com/css/P8/documents/100114335 (x_refsource_CONFIRM)
- 1024651 (vdb-entry, x_refsource_SECTRACK)
- https://bugzilla.mozilla.org/show_bug.cgi?id=607222 (x_refsource_CONFIRM)
- http://norman.com/about_norman/press_center/news_archive/2010/129223/en?utm_source=twitterfeed&utm_medium=twitter (x_refsource_MISC)
- http://blogs.sun.com/security/entry/multiple_vulnerabilities_in_mozilla_firefox (x_refsource_CONFIRM)
- http://www.norman.com/about_norman/press_center/news_archive/2010/129223/ (x_refsource_MISC)
- 1024650 (vdb-entry, x_refsource_SECTRACK)
- http://blog.mozilla.com/security/2010/10/26/critical-vulnerability-in-firefox-3-5-and-firefox-3-6/ (x_refsource_CONFIRM)
10 more
- ADV-2010-2857 (vdb-entry, x_refsource_VUPEN)
- ADV-2011-0061 (vdb-entry, x_refsource_VUPEN)
- http://support.avaya.com/css/P8/documents/100114329 (x_refsource_CONFIRM)
- 1024645 (vdb-entry, x_refsource_SECTRACK)
- http://www.norman.com/security_center/virus_description_archive/129146/ (x_refsource_MISC)
- ADV-2010-2871 (vdb-entry, x_refsource_VUPEN)
- http://isc.sans.edu/diary.html?storyid=9817 (x_refsource_MISC)
- http://www.mozilla.org/security/announce/2010/mfsa2010-73.html (x_refsource_CONFIRM)
- oval:org.mitre.oval:def:12108 (vdb-entry, signature, x_refsource_OVAL)
- ADV-2010-2864 (vdb-entry, x_refsource_VUPEN)
Other databases
Where this comes from
This advisory is generated automatically by VEDAS from: CVE.org record, CISA KEV, cve-scores (EPSS and VEDAS), Exploit Observer. Text in quotes is reproduced from the source; everything else is a fixed template filled with source fields. Nothing here is written by a language model. Check the vendor advisory before acting, and read how VEDAS and Exploit Observer work, and their limits.