Is CVE-2022-34470 actively exploited?

No active exploitation of CVE-2022-34470 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2022-34470 be exploited remotely?

Yes. CVE-2022-34470 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2022-34470?

CVE-2022-34470 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2022-34470

CWE-416Published: December 22, 2022· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

Session history navigations may have led to a use-after-free and potentially exploitable crash. This vulnerability affects Firefox < 102, Firefox ESR < 91.11, Thunderbird < 102, and Thunderbird < 91.11.

NVD Source

Risk Analysis

This vulnerability involves a use-after-free flaw triggered during session history navigation, which can lead to a crash. Given the critical CVSS score of 9.8 and the potential for remote exploitation without user interaction, this poses a significant risk to affected browser and mail client users.

There is no known public exploit for this vulnerability, and it is not currently listed in CISA's KEV catalog. The flaw is remotely exploitable due to its network attack vector and low complexity.

Recommended Action

Users should update Firefox to version 102 or higher, Firefox ESR to 91.11 or higher, and Thunderbird to 102 or 91.11 or higher.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2022-34470 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

From a weakness classification perspective (CWE-416): Use-after-free vulnerabilities involve accessing memory after it has been freed, often enabling arbitrary code execution.