Is CVE-2022-29916 in the CISA KEV catalog?

No. CVE-2022-29916 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-29916?

CVE-2022-29916 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2022-29916?

CVE-2022-29916 has an EPSS score of 0.72% (50th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-29916?

Upgrade firefox on debian unstable to 100.0-1 or later. Fixes are available for 7 affected products.

CVE & CISA-KEV Catalog

CVE-2022-29916

MEDIUM

6.5

CVSS v3

NVD

Description

Firefox behaved slightly differently for already known resources when loading CSS resources involving CSS variables. This could have been used to probe the browser history. This vulnerability affects Thunderbird < 91.9, Firefox ESR < 91.9, and Firefox < 100.

CWE-200Information Exposure

How to fix

Remediation Available

firefoxDebian

Fixed in:100.0-1CVE-2022-29916

firefoxUbuntu

Fixed in:100.0+build2-0ubuntu0.18.04.1USN-5411-1

Fixed in:100.0+build2-0ubuntu0.20.04.1USN-5411-1

thunderbirdUbuntu

Fixed in:1:91.9.1+build1-0ubuntu0.18.04.1USN-5435-1

Fixed in:1:91.9.1+build1-0ubuntu0.20.04.1USN-5435-1

Fixed in:1:91.9.1+build1-0ubuntu0.22.04.1USN-5435-1

DeveloperEditionWindows application

Affected:100.0Fixed in:100.0Mozilla

Mozilla Firefox (en-US)Windows application

Affected:100.0Fixed in:100.0Mozilla

Mozilla Firefox ESR (en-US)Windows application

Affected:91.9Fixed in:91.9Mozilla

Mozilla Thunderbird (en-US)Windows application

Affected:91.9Fixed in:91.9Mozilla

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

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Exploit Intelligence

0.72%probability of exploitation in 30 days

50thpercentile

Moderate risk: more likely to be exploited than 50% of all known CVEs.

References

Exploit4

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 2025-04-15.