Is CVE-2022-34471 in the CISA KEV catalog?

No. CVE-2022-34471 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-34471?

CVE-2022-34471 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2022-34471?

CVE-2022-34471 has an EPSS score of 0.25% (16th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-34471?

Upgrade firefox on debian unstable to 102.0-1 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2022-34471

MEDIUM

6.5

CVSS v3

NVD

Description

When downloading an update for an addon, the downloaded addon update's version was not verified to match the version selected from the manifest. If the manifest had been tampered with on the server, an attacker could trick the browser into downgrading the addon to a prior version. This vulnerability affects Firefox < 102.

CWE-345

How to fix

Remediation Available

firefoxDebian

Fixed in:102.0-1CVE-2022-34471

firefoxUbuntu

Fixed in:102.0+build2-0ubuntu0.18.04.1USN-5504-1

Fixed in:102.0+build2-0ubuntu0.20.04.1USN-5504-1

DeveloperEditionWindows application

Affected:102.0Fixed in:102.0Mozilla

Mozilla Firefox (en-US)Windows application

Affected:102.0Fixed in:102.0Mozilla

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

ConfidentialityNone

IntegrityHigh

AvailabilityNone

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

Exploit Intelligence

0.25%probability of exploitation in 30 days

16thpercentile

Low risk: more likely to be exploited than 16% of all known CVEs.

References

Vendor Advisory2

Related Vulnerabilities

Other CWE-345 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-38831	High	7.8	98%	KEV + Ransom	Fix
CVE-2016-4553	High	8.6	80%	-	Fix
CVE-2016-4554	High	8.6	39%	-	Fix
CVE-2023-35719	Medium	6.8	26%	-	-
CVE-2022-26871	Critical	9.8	20%	KEV	-
CVE-2014-4936	High	9.3	17%	-	-

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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.