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CVE-2006-2780

26
FAUCET Score

CVE-2006-2780 describes an integer overflow vulnerability in Mozilla Firefox and Thunderbird versions prior to 1.5.0.4. This flaw, stemming from "jsstr tagify," can lead to memory corruption, enabling remote attackers to cause a denial of service (crash) and potentially execute arbitrary code. With a critical CVSS score of 9.3, this vulnerability is easily exploitable over a network with medium attack complexity, posing significant confidentiality, integrity, and availability risks. Despite its high severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.5.0.3CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
<= 1.5.0.3CPE matchmatch criteria
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

9.3HIGH

AV:N/AC:M/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
7.25%
Probability of exploitation in next 30 days
EPSS Percentile
93.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0725 is in the 71st percentile among its peer group of 8,920 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (9)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 3Fixed in: seamonkey-0:1.0.2-0.1.0.EL3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: devhelp-0:0.10-0.2.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: seamonkey-0:1.0.3-0.el4.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: firefox-0:1.5.0.5-0.el4.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: thunderbird-0:1.5.0.5-0.el4.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux AS (Advanced Server) version 2.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux ES version 2.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux WS version 2.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Linux Advanced Workstation 2.1
View patch

Vendor Advisories (1)

redhatCVE-2006-2780Critical

security flaw

Jun 2, 2006

References

rhn.redhat.com / errata/RHSA-2006-0609.html
secunia.com / advisories/20376
secunia.com / advisories/20382
secunia.com / advisories/20561
secunia.com / advisories/20709
secunia.com / advisories/21134
secunia.com / advisories/21176
secunia.com / advisories/21178
secunia.com / advisories/21183
secunia.com / advisories/21188
secunia.com / advisories/21210
secunia.com / advisories/21269
secunia.com / advisories/21270
secunia.com / advisories/21324
secunia.com / advisories/21336
secunia.com / advisories/21532
secunia.com / advisories/21607
secunia.com / advisories/21631
secunia.com / advisories/22065
secunia.com / advisories/22066
secunia.com / advisories/27216
securitytracker.com / id
securitytracker.com / id
exchange.xforce.ibmcloud.com / vulnerabilities/26843
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11305
sunsolve.sun.com / search/document.do
sunsolve.sun.com / search/document.do
usn.ubuntu.com / 296-1
usn.ubuntu.com / 296-2
usn.ubuntu.com / 297-1
usn.ubuntu.com / 297-3
usn.ubuntu.com / 323-1
debian.org / security/2006/dsa-1118
debian.org / security/2006/dsa-1120
debian.org / security/2006/dsa-1134
gentoo.org / security/en/glsa/glsa-200606-12.xml
gentoo.org / security/en/glsa/glsa-200606-21.xml
kb.cert.org / vuls/id/466673
US Government Resource
mandriva.com / security/advisories
mandriva.com / security/advisories
mandriva.com / security/advisories
mozilla.org / security/announce/2006/mfsa2006-32.html
novell.com / linux/security/advisories/2006_35_mozilla.html
redhat.com / support/errata/RHSA-2006-0578.html
redhat.com / support/errata/RHSA-2006-0594.html
redhat.com / support/errata/RHSA-2006-0610.html
redhat.com / support/errata/RHSA-2006-0611.html
securityfocus.com / archive/1/435795/100/0/threaded
securityfocus.com / archive/1/446657/100/200/threaded
securityfocus.com / archive/1/446658/100/200/threaded
securityfocus.com / bid/18228
us-cert.gov / cas/techalerts/TA06-153A.html
US Government Resource
vupen.com / english/advisories/2006/2106
vupen.com / english/advisories/2006/3748
vupen.com / english/advisories/2006/3749
vupen.com / english/advisories/2007/3488
vupen.com / english/advisories/2008/0083