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NVD / CVE Program· CNA mozilla

CVE-2022-46874: A file with a long filename could have had its filename truncated to remove the valid extension, leaving a malicious extension in its place.

Noroxi assessment

Priority: Monitor (action score 35/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.97% (FIRST EPSS); higher than 62% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • Fixed version: firefox (AlmaLinux:8) 102.6.0-1.el8_7.alma; thunderbird (AlmaLinux:8) 102.6.0-2.el8_7.alma; firefox (AlmaLinux:9) 102.6.0-1.el9_1.alma.

Low priority for now. Upgrade to firefox (AlmaLinux:8) 102.6.0-1.el8_7.alma; thunderbird (AlmaLinux:8) 102.6.0-2.el8_7.alma; firefox (AlmaLinux:9) 102.6.0-1.el9_1.alma or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

A file with a long filename could have had its filename truncated to remove the valid extension, leaving a malicious extension in its place. This could potentially led to user confusion and the execution of malicious code.<br/>*Note*: This issue was originally included in the advisories for Thunderbird 102.6, but a patch (specific to Thunderbird) was omitted, resulting in it actually being fixed in Thunderbird 102.6.1. This vulnerability affects Firefox < 108, Thunderbird < 102.6.1, Thunderbird < 102.6, and Firefox ESR < 102.6.

HighCVSS 8.8 · v3.1—No exploit Fix available
Published
Dec 22, 2022
Updated
Jun 17, 2026
EPSS
0.9% · 62th percentile

Report tools

JSON

Action score

35

Monitor

Low priority for now.

CVSS
35 / 40 · 8.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.9%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2022-46874

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
mozillafirefox
mozillafirefox esr
mozillathunderbird

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • mozilla firefoxbefore 108.0
  • mozilla firefox esrbefore 102.6
  • mozilla thunderbirdbefore 102.6

Versions reported by the vendor

Affected version ranges reported by the assigning authority (mozilla). Independent of NVD's CPE analysis and usually ahead of it.

  • Mozilla Firefox

    • unspecified and later · before 108affected

  • Mozilla Firefox ESR

    • unspecified and later · before 102.6affected

  • Mozilla Thunderbird

    • unspecified and later · before 102.6.1affected
    • unspecified and later · before 102.6affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:8firefoxbefore 102.6.0-1.el8_7.alma102.6.0-1.el8_7.alma
AlmaLinux:8thunderbirdbefore 102.6.0-2.el8_7.alma102.6.0-2.el8_7.alma
AlmaLinux:9firefoxbefore 102.6.0-1.el9_1.alma102.6.0-1.el9_1.alma
AlmaLinux:9thunderbirdbefore 102.6.0-2.el9_1.alma102.6.0-2.el9_1.alma
Debian:10firefox-esrbefore 102.6.0esr-1~deb10u1102.6.0esr-1~deb10u1
Debian:10thunderbirdbefore 1:102.6.0-1~deb10u11:102.6.0-1~deb10u1
Debian:11firefox-esrbefore 102.6.0esr-1~deb11u1102.6.0esr-1~deb11u1
Debian:11thunderbirdbefore 1:102.6.0-1~deb11u11:102.6.0-1~deb11u1
Debian:12firefox-esrbefore 102.6.0esr-1102.6.0esr-1
Debian:12thunderbirdbefore 1:102.6.0-11:102.6.0-1
openSUSE:Leap 15.3MozillaFirefoxbefore 102.6.0-150200.152.70.1102.6.0-150200.152.70.1
openSUSE:Leap 15.3MozillaThunderbirdbefore 102.6.0-150200.8.96.1102.6.0-150200.8.96.1
openSUSE:Leap 15.4MozillaThunderbirdbefore 102.6.1-150200.8.99.1102.6.1-150200.8.99.1
openSUSE:TumbleweedMozillaFirefoxbefore 108.0.1-1.1108.0.1-1.1
openSUSE:TumbleweedMozillaThunderbirdbefore 102.6.0-1.1102.6.0-1.1
Red Hat:enterprise_linux:7::clientfirefoxbefore 0:102.6.0-1.el7_90:102.6.0-1.el7_9
Red Hat:enterprise_linux:7::clientfirefox-debuginfobefore 0:102.6.0-1.el7_90:102.6.0-1.el7_9
Red Hat:enterprise_linux:7::clientthunderbirdbefore 0:102.6.0-2.el7_90:102.6.0-2.el7_9
Red Hat:enterprise_linux:7::clientthunderbird-debuginfobefore 0:102.6.0-2.el7_90:102.6.0-2.el7_9
Red Hat:enterprise_linux:8::appstreamfirefoxbefore 0:102.6.0-1.el8_70:102.6.0-1.el8_7
Red Hat:enterprise_linux:8::appstreamfirefox-debuginfobefore 0:102.6.0-1.el8_70:102.6.0-1.el8_7
Red Hat:enterprise_linux:8::appstreamfirefox-debugsourcebefore 0:102.6.0-1.el8_70:102.6.0-1.el8_7
Red Hat:enterprise_linux:8::appstreamthunderbirdbefore 0:102.6.0-2.el8_70:102.6.0-2.el8_7
Red Hat:enterprise_linux:8::appstreamthunderbird-debuginfobefore 0:102.6.0-2.el8_70:102.6.0-2.el8_7

+43

Same product

mozilla: all records

Other highest-scoring records for the same primary product.

  • CVE-2010-3765Mozilla Firefox 3.5.x through 3.5.14 and 3.6.x through 3.6.11, Thunderbird 3.1.6 before 3.1.6 and 3.0.x before 3.0.10, and SeaMonkey 2.x befKEV
    94Now
  • CVE-2019-11708Insufficient vetting of parameters passed with the Prompt:Open IPC message between child and parent processes can result in the non-sandboxeKEV
    87Now
  • CVE-2015-4495The PDF reader in Mozilla Firefox before 39.0.3, Firefox ESR 38.x before 38.1.1, and Firefox OS before 2.2 allows remote attackers to bypassKEV
    86Now

Published before and after this one in the same product

  • ← EarlierCVE-2022-46872Dec 22, 2022 · An attacker who compromised a content process could have partially escaped the sandbox to read arbitrary files via clipboard-related IPC mes
    34Monitor
  • ← EarlierCVE-2022-46873Dec 22, 2022 · Because Firefox did not implement the <code>unsafe-hashes</code> CSP directive, an attacker who was able to inject markup into a page otherw
    35Monitor
  • Later →CVE-2022-46875Dec 22, 2022 · The executable file warning was not presented when downloading .atloc and .ftploc files, which can run commands on a user's computer.
    26Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
almalinux:firefox102.6.0-1.el9_1.alma · AlmaLinux:9Package registry (OSV)
almalinux:thunderbird102.6.0-2.el8_7.alma · AlmaLinux:8Package registry (OSV)
debian:firefox-esr102.6.0esr-1 · Debian:12Package registry (OSV)
debian:thunderbird1:102.6.0-1 · Debian:12Package registry (OSV)
opensuse:MozillaFirefox102.6.0-150200.152.70.1 · openSUSE:Leap 15.3Package registry (OSV)
opensuse:MozillaThunderbird102.6.0-150200.8.96.1 · openSUSE:Leap 15.3Package registry (OSV)
red hat:firefox0:102.6.0-1.el9_1 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:firefox-debuginfo0:102.6.0-1.el9_1 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:firefox-debugsource0:102.6.0-1.el9_1 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:thunderbird0:102.6.0-2.el8_7 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:thunderbird-debuginfo0:102.6.0-2.el8_7 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:thunderbird-debugsource0:102.6.0-2.el8_7 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
rocky linux:firefox0:102.6.0-1.el8_7 · Rocky Linux:8Package registry (OSV)
suse:MozillaFirefox102.6.0-112.142.1 · SUSE:OpenStack Cloud 9Package registry (OSV)
suse:MozillaFirefox102.6.0-150200.152.70.1 · SUSE:Linux Enterprise Module for Desktop Applications 15 SP3Package registry (OSV)
suse:MozillaThunderbird102.6.0-150200.8.96.1 · SUSE:Linux Enterprise Module for Package Hub 15 SP4Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-94 · Improper Control of Generation of Code ('Code Injection')

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (6 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records