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CVE-2010-0177

25
FAUCET Score

CVE-2010-0177 is a critical dangling pointer vulnerability affecting Mozilla Firefox versions before 3.0.19, 3.5.9, and 3.6.2, and SeaMonkey before 2.0.4. This flaw allows remote attackers to execute arbitrary code or cause a denial of service by freeing the window.navigator.plugins array while a reference to an element is still active. With a CVSS score of 9.3, it is highly severe, requiring medium attack complexity but no authentication, and can lead to complete compromise of confidentiality, integrity, and availability. While no public exploit intelligence or active exploitation is reported, its high FAUCET Risk Score indicates significant potential danger.

Impacted Technologies

VendorProductVersion(s)CPE
3.6CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:3.6:*:*:*:*:*:*:*
<= 3.0.17CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
0.1CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:0.1:*:*:*:*:*:*:*
0.2CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:0.2:*:*:*:*:*:*:*
0.3CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:0.3:*:*:*:*:*:*:*

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
7.00%
Probability of exploitation in next 30 days
EPSS Percentile
93.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0699 is in the 70th 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 (8)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: thunderbird-0:2.0.0.24-6.el5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 3Fixed in: seamonkey-0:1.0.9-0.52.el3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: firefox-0:3.0.19-1.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: seamonkey-0:1.0.9-54.el4_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: thunderbird-0:1.5.0.12-28.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox-0:3.0.19-1.el5_5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: xulrunner-0:1.9.0.19-1.el5_5
View patch
mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2010-0177Critical

Mozilla Dangling pointer vulnerability in nsPluginArray

Mar 30, 2010

References

lists.opensuse.org / opensuse-security-announce/2010-06/msg00001.html
bugzilla.mozilla.org / show_bug.cgi
secunia.com / advisories/38566
Vendor Advisory
secunia.com / advisories/39117
Vendor Advisory
secunia.com / advisories/39136
Vendor Advisory
secunia.com / advisories/39240
Vendor Advisory
secunia.com / advisories/39243
Vendor Advisory
secunia.com / advisories/39308
secunia.com / advisories/39397
securitytracker.com / id
exchange.xforce.ibmcloud.com / vulnerabilities/57393
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10833
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7622
ubuntu.com / usn/usn-921-1
debian.org / security/2010/dsa-2027
mandriva.com / security/advisories
mozilla.org / security/announce/2010/mfsa2010-19.html
Vendor Advisory
redhat.com / support/errata/RHSA-2010-0332.html
redhat.com / support/errata/RHSA-2010-0333.html
securityfocus.com / archive/1/510540/100/0/threaded
vupen.com / english/advisories/2010/0748
Vendor Advisory
vupen.com / english/advisories/2010/0764
Vendor Advisory
vupen.com / english/advisories/2010/0765
Vendor Advisory
vupen.com / english/advisories/2010/0781
vupen.com / english/advisories/2010/0849
zerodayinitiative.com / advisories/ZDI-10-049