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TI-2021-16110 Aliases CVE-2021-38510GHSA-h8g4-jwjc-gf58

The executable file warning was not presented when downloading .inetloc files, which, due…

Priority MEDIUM 40Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 1 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.

Summary

The executable file warning was not presented when downloading .inetloc files, which, due to a flaw in Mac OS, can run commands on a user's computer.*Note: This issue only affected Mac OS operating systems. Other operating systems are unaffected.*. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.

Why it matters now

EPSS 0.01032 63rd percentileScored 2026-11-07
Fix Partial Firefox (Mozilla): 94Thunderbird (Mozilla): 91.3+1 more productRed Hat: 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
MozillaFirefoxbefore 9494Patch availableCNA
MozillaThunderbirdbefore 91.391.3Patch availableCNA
MozillaFirefox ESRbefore 91.391.3Patch availableCNA
  • Firefox VendorMozilla Affected before 94 Fixed in 94 Patch available CNA
  • Thunderbird VendorMozilla Affected before 91.3 Fixed in 91.3 Patch available CNA
  • Firefox ESR VendorMozilla Affected before 91.3 Fixed in 91.3 Patch available CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*before 94.0VulnerableMozilla
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*before 91.3.0VulnerableMozilla
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*before 91.3.0VulnerableMozilla
cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*not specified by NVDRunning onApple
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 94.0 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* Versions before 91.3.0 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 91.3.0 Vulnerable ·Mozilla
  • cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Apple

Remediation

  • Fix · CNA Firefox (Mozilla) Fixed in 94
  • Fix · CNA Thunderbird (Mozilla) Fixed in 91.3
  • Fix · CNA Firefox ESR (Mozilla) Fixed in 91.3

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Mozilla Firefox 94

    6 records Highest priority Priority MEDIUM 1 MEDIUM, 5 LOW

    Other records, highest priority first

    • TI-2021-16105 Exposure of resource to wrong sphere in Mozilla FirefoxPriority LOW 31
    • TI-2021-19420 Cross-site scripting in Mozilla FirefoxPriority LOW 30
    • TI-2021-19422 Open redirect in Mozilla FirefoxPriority LOW 28
    Show all 6 records →
  • Release ·

    Mozilla Firefox ESR, Thunderbird 91.3

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2021-16105 Exposure of resource to wrong sphere in Mozilla FirefoxPriority LOW 31
    Show all 2 records →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Not affected: 3 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-38510
  2. 2026-10-03 Alias added: GHSA-h8g4-jwjc-gf58

References

Advisory 4

  • TI-2024-08981 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-09832 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.6
  • TI-2019-08769 Improper input validation in Mozilla Firefox ESR KEVCVSS 3.1CRITICAL 10.0
  • TI-2010-03577 Mozilla Firefox 3.5.x through 3.5.14 and 3.6.x through 3.6.11, Thunderbird 3.1.6 before… KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-04799 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
  • TI-2023-04477 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
See all 3444 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences