Is CVE-2012-3972 in the CISA KEV catalog?

No. CVE-2012-3972 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2012-3972?

CVE-2012-3972 has a CVSS v2 base score of 5.0 (MEDIUM).

What is the EPSS score for CVE-2012-3972?

CVE-2012-3972 has an EPSS score of 3.96% (89th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2012-3972?

Upgrade DeveloperEdition to 15.0 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2012-3972

MEDIUMEPSS 89th pctl

5.0

CVSS v2

NVD

Description

The format-number functionality in the XSLT implementation in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonkey before 2.12 allows remote attackers to obtain sensitive information via unspecified vectors that trigger a heap-based buffer over-read.

CWE-200Information Exposure

How to fix

Remediation Available

DeveloperEditionWindows application

Affected:15.0Fixed in:15.0Mozilla

Affected:10.0 10.0.7Fixed in:10.0.7Mozilla

Mozilla Firefox (en-US)Windows application

Affected:15.0Fixed in:15.0Mozilla

Affected:10.0 10.0.7Fixed in:10.0.7Mozilla

Mozilla Thunderbird (en-US)Windows application

Affected:15.0Fixed in:15.0Mozilla

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

3.96%probability of exploitation in 30 days

89thpercentile

Elevated risk: more likely to be exploited than 89% of all known CVEs.

References

Vendor Advisory2

Third-Party Advisory12

Related Vulnerabilities

Other CWE-200 (Information Exposure) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-24919	High	8.6	100%	KEV + Ransom	-
CVE-2020-14181	Medium	5.3	100%	-	Fix
CVE-2021-34429	Medium	5.3	99%	-	Fix
CVE-2018-11409	Medium	5.3	98%	-	-
CVE-2021-41277	Critical	10.0	97%	KEV	-
CVE-2016-2183	High	7.5	96%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.