SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2012-3975

The DOMParser component in Mozilla Firefox before 15.0, Thunderbird before 15.0, and SeaMonkey before 2.12 loads subresources during parsing of text/html data within an extension, which allows remote attackers to obtain sensitive information by…

MEDIUM 4.3EPSS 1.87%

Does this matter?

Lower severity and a low EPSS score (1.87%). Track it; it rarely justifies an emergency change on its own.

Description

The DOMParser component in Mozilla Firefox before 15.0, Thunderbird before 15.0, and SeaMonkey before 2.12 loads subresources during parsing of text/html data within an extension, which allows remote attackers to obtain sensitive information by providing crafted data to privileged extension code.

CVSS 2.0
4.3 MEDIUMAV:N/AC:M/Au:N/C:P/I:N/A:N
EPSS
1.87% probability · 79th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-200
Affected
mozilla/firefox · mozilla/thunderbird · mozilla/seamonkey
Source
cve@mitre.org
EPSS trend
0%3%5%26 October 2026: 1.87%26 October 202626 October 2026

EPSS 1.9% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.