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CVE-2007-0777

29
FAUCET Score

CVE-2007-0777 describes a critical memory corruption vulnerability in the JavaScript engine of Mozilla Firefox, Thunderbird, and SeaMonkey versions prior to 1.5.0.10 and 2.0.0.2. This flaw allows remote attackers to trigger a denial of service (crash) and potentially execute arbitrary code. With a CVSS score of 9.3, it is highly severe, requiring medium attack complexity but offering complete confidentiality, integrity, and availability impact. Despite its age and 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, < 1.5.0.10CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
>= 2.0, < 2.0.0.2CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
< 1.0.8CPE matchmatch criteria
cpe:2.3:a:mozilla:seamonkey:*:*:*:*:*:*:*:*
< 1.5.0.10CPE matchmatch criteria
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
5.10CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:5.10:*:*:*:*:*:*:*

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
7.56%
Probability of exploitation in next 30 days
EPSS Percentile
93.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0756 is in the 72nd percentile among its peer group of 8,918 CVEs.

Social Chatter

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 (11)

mozillapatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 3Fixed in: seamonkey-0:1.0.8-0.2.el3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: devhelp-0:0.10-0.7.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: seamonkey-0:1.0.8-0.2.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: thunderbird-0:1.5.0.10-0.1.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 2.1Fixed in: seamonkey-0:1.0.8-0.2.el2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: devhelp-0:0.12-10.0.1.el5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox-0:1.5.0.10-2.el5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: yelp-0:2.16.0-14.0.1.el5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: thunderbird-0:1.5.0.10-1.el5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: firefox-0:1.5.0.10-0.1.el4
View patch

Vendor Advisories (1)

redhatCVE-2007-0777Critical

security flaw

Feb 23, 2007

References

patches.sgi.com / support/free/security/advisories/20070202-01-P.asc
Broken Link
patches.sgi.com / support/free/security/advisories/20070301-01-P.asc
Broken Link
fedoranews.org / cms/node/2713
Broken Link
fedoranews.org / cms/node/2728
Broken Link
fedoranews.org / cms/node/2747
Broken Link
fedoranews.org / cms/node/2749
Broken Link
h20000.www2.hp.com / bizsupport/TechSupport/Document.jsp
Broken Link
lists.suse.com / archive/suse-security-announce/2007-Mar/0001.html
Broken Link
rhn.redhat.com / errata/RHSA-2007-0077.html
Third Party Advisory
secunia.com / advisories/24205
Third Party Advisory
secunia.com / advisories/24238
Third Party Advisory
secunia.com / advisories/24252
Third Party Advisory
secunia.com / advisories/24287
Third Party Advisory
secunia.com / advisories/24290
Third Party Advisory
secunia.com / advisories/24293
Third Party Advisory
secunia.com / advisories/24320
Third Party Advisory
secunia.com / advisories/24328
Third Party Advisory
secunia.com / advisories/24333
Third Party Advisory
secunia.com / advisories/24342
Third Party Advisory
secunia.com / advisories/24343
Third Party Advisory
secunia.com / advisories/24384
Third Party Advisory
secunia.com / advisories/24389
Third Party Advisory
secunia.com / advisories/24393
Third Party Advisory
secunia.com / advisories/24395
Third Party Advisory
secunia.com / advisories/24406
Third Party Advisory
secunia.com / advisories/24410
Third Party Advisory
secunia.com / advisories/24437
Third Party Advisory
secunia.com / advisories/24455
Third Party Advisory
secunia.com / advisories/24456
Third Party Advisory
secunia.com / advisories/24457
Third Party Advisory
secunia.com / advisories/24522
Third Party Advisory
secunia.com / advisories/24650
Third Party Advisory
security.gentoo.org / glsa/glsa-200703-04.xml
Third Party Advisory
security.gentoo.org / glsa/glsa-200703-18.xml
Third Party Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/32699
Third Party AdvisoryVDB Entry
issues.rpath.com / browse/RPL-1081
Broken Link
issues.rpath.com / browse/RPL-1103
Broken Link
slackware.com / security/viewer.php
Mailing ListThird Party Advisory
slackware.com / security/viewer.php
Mailing ListThird Party Advisory
slackware.com / security/viewer.php
Mailing ListThird Party Advisory
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11331
Third Party Advisory
gentoo.org / security/en/glsa/glsa-200703-08.xml
Third Party Advisory
kb.cert.org / vuls/id/269484
Third Party AdvisoryUS Government Resource
mandriva.com / security/advisories
Third Party Advisory
mandriva.com / security/advisories
Third Party Advisory
mozilla.org / security/announce/2007/mfsa2007-01.html
PatchVendor Advisory
novell.com / linux/security/advisories/2007_22_mozilla.html
Broken Link
osvdb.org / 32115
Broken Link
redhat.com / support/errata/RHSA-2007-0078.html
Third Party Advisory
redhat.com / support/errata/RHSA-2007-0079.html
Third Party Advisory
redhat.com / support/errata/RHSA-2007-0097.html
Third Party Advisory
redhat.com / support/errata/RHSA-2007-0108.html
Third Party Advisory
securityfocus.com / archive/1/461336/100/0/threaded
Third Party AdvisoryVDB Entry
securityfocus.com / archive/1/461809/100/0/threaded
Third Party AdvisoryVDB Entry
securityfocus.com / bid/22694
Third Party AdvisoryVDB Entry
securitytracker.com / id
Third Party AdvisoryVDB Entry
ubuntu.com / usn/usn-428-1
Third Party Advisory
ubuntu.com / usn/usn-431-1
Third Party Advisory
vupen.com / english/advisories/2007/0718
Third Party Advisory
vupen.com / english/advisories/2007/0719
Third Party Advisory
vupen.com / english/advisories/2008/0083
Third Party Advisory