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No exploitation reportedFix available

CVE-2023-0767

No exploitation reported by the sources we read.

  • Published2023-06-02
  • Fixed in110.0

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

An attacker could construct a PKCS 12 cert bundle in such a way that could allow for arbitrary memory writes via PKCS 12 Safe Bag attributes being mishandled. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.

Timeline

dates in UTC
  1. 2023-06-0217:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-0767?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-0767?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Mozilla firefox
BranchAffectedFixed in
110.0< 110.0110.0
Mozilla firefox esr
BranchAffectedFixed in
102.8< 102.8102.8
Mozilla thunderbird
BranchAffectedFixed in
102.8< 102.8102.8

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • firefoxAlmaLinux:9all versions · fixed in 102.8.0-2.el9_1.almaand 2 other packages
  • firefoxAlmaLinux:8all versions · fixed in 102.8.0-2.el8_7.almaand 1 other package
  • nsprAlmaLinux:9all versions · fixed in 4.34.0-17.el9_1and 1 other package
  • nssAlmaLinux:9all versions · fixed in 3.79.0-17.el9_1and 9 other packages
  • nssAlmaLinux:8all versions · fixed in 3.79.0-11.el8_7and 9 other packages

Full record on NVD

Fix

  1. Update Mozilla firefox to 110.0

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
2023-06-02
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2023-0767?

An attacker could construct a PKCS 12 cert bundle in such a way that could allow for arbitrary memory writes via PKCS 12 Safe Bag attributes being mishandled. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.

Is CVE-2023-0767 actively exploited?

Active exploitation of CVE-2023-0767 has not been confirmed. Its EPSS score was 0.8% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-0767?

CVE-2023-0767 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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