Is CVE-2022-34479 in the CISA KEV catalog?

No. CVE-2022-34479 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-34479?

CVE-2022-34479 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2022-34479?

CVE-2022-34479 has an EPSS score of 0.74% (50th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-34479?

Upgrade firefox on debian unstable to 102.0-1 or later. Fixes are available for 7 affected products.

CVE & CISA-KEV Catalog

CVE-2022-34479

MEDIUM

6.5

CVSS v3

NVD

Description

A malicious website that could create a popup could have resized the popup to overlay the address bar with its own content, resulting in potential user confusion or spoofing attacks. *This bug only affects Thunderbird for Linux. Other operating systems are unaffected.*. This vulnerability affects Firefox < 102, Firefox ESR < 91.11, Thunderbird < 102, and Thunderbird < 91.11.

CWE-451

How to fix

Remediation Available

firefoxDebian

Fixed in:102.0-1CVE-2022-34479

firefoxUbuntu

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

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

thunderbirdUbuntu

Fixed in:1:91.11.0+build2-0ubuntu0.18.04.1USN-5512-1

Fixed in:1:91.11.0+build2-0ubuntu0.20.04.1USN-5512-1

Fixed in:1:91.11.0+build2-0ubuntu0.22.04.1USN-5512-1

DeveloperEditionWindows application

Affected:102.0Fixed in:102.0Mozilla

Mozilla Firefox (en-US)Windows application

Affected:102.0Fixed in:102.0Mozilla

Mozilla Firefox ESR (en-US)Windows application

Affected:91.11Fixed in:91.11Mozilla

Mozilla Thunderbird (en-US)Windows application

Affected:91.11Fixed in:91.11Mozilla

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

0.74%probability of exploitation in 30 days

50thpercentile

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

References

Vendor Advisory4

Embed a live status badge for CVE-2022-34479

Markdown

[![CVE-2022-34479](https://tridentstack.com/cve/badge/CVE-2022-34479.svg)](https://tridentstack.com/cve/CVE-2022-34479)

HTML

<a href="https://tridentstack.com/cve/CVE-2022-34479"><img src="https://tridentstack.com/cve/badge/CVE-2022-34479.svg" alt="CVE-2022-34479"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

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.