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CVE-2012-5837

25
FAUCET Score

CVE-2012-5837 describes a cross-site scripting (XSS) vulnerability in the Web Developer Toolbar for Mozilla Firefox versions prior to 17.0. This flaw allows user-assisted remote attackers to execute arbitrary script with elevated chrome privileges through a specially crafted string. With a CVSS score of 6.8, this vulnerability has a medium attack complexity and could lead to partial confidentiality, integrity, and availability impacts. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 16.0.2CPE 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:*:*:*:*:*:*:*
0.4CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:0.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.26%
Probability of exploitation in next 30 days
EPSS Percentile
81.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0226 is in the 69th percentile among its peer group of 19,955 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Vendor Patches (1)

mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2012-5837Moderate

Mozilla: Script entered into Developer Toolbar runs with chrome privileges (MFSA 2012-102)

Nov 20, 2012

References

lists.opensuse.org / opensuse-security-announce/2012-11/msg00021.html
lists.opensuse.org / opensuse-security-announce/2013-01/msg00022.html
lists.opensuse.org / opensuse-updates/2012-11/msg00090.html
lists.opensuse.org / opensuse-updates/2012-11/msg00092.html
lists.opensuse.org / opensuse-updates/2012-11/msg00093.html
osvdb.org / 87586
bugzilla.mozilla.org / show_bug.cgi
secunia.com / advisories/51369
secunia.com / advisories/51434
secunia.com / advisories/51439
exchange.xforce.ibmcloud.com / vulnerabilities/80180
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16542
mozilla.org / security/announce/2012/mfsa2012-102.html
Vendor Advisory
securityfocus.com / bid/56645
ubuntu.com / usn/USN-1638-1
ubuntu.com / usn/USN-1638-3