CVE-2023-4050
No exploitation reported by the sources we read.
- Published2023-08-01
- Fixed in116.0 · 116 · 115.1 · 102.14
- WeaknessCWE-787
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « 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
In some cases, an untrusted input stream was copied to a stack buffer without checking its size. This resulted in a potentially exploitable crash which could have led to a sandbox escape. This vulnerability affects Firefox < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1.
Timeline
dates in UTC- 2023-08-0115:15CVE publishedNVD
- 2026-10-2319:23EPSS crossed 10 %FIRST EPSS
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-4050?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-4050?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD · CISA-ADP| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 116.0 | < 116.0 | 116.0 | NVD |
| 116.x | < 116 | 116 | CISA-ADP |
| 115.x | ≥ 115.0, < 115.1 | 115.1 | NVD |
| 102.x | ≥ 102.0, < 102.14 | 102.14 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 11.0 | = 11.0 | no fix published | NVD |
| 12.0 | = 12.0 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 115.1 | < 115.1 | 115.1 | CISA-ADP |
| 102.14 | < 102.14 | 102.14 | CISA-ADP |
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 102.14.0-1.el9_2.almaand 2 other packages
- firefoxAlmaLinux:8all versions · fixed in 102.14.0-1.el8_8.almaand 1 other package
Fix
- Update Mozilla firefox to 116.0 · 116 · 115.1 · 102.14
Advisories and patches
- www.mozilla.orgVendor Advisory
- www.mozilla.orgVendor Advisory
- www.mozilla.orgVendor Advisory
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:N/S:U/C:N/I:N/A:H
- Published
- 2023-08-01
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2023-4050?
Is CVE-2023-4050 actively exploited?
What is the CVSS score for CVE-2023-4050?
Running firefox? Hear about its next vulnerability
Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».
No credit card required · No monthly cap on website lookups · 250 API requests/month
Go further
- Following what attackers exploit right now? The CISA KEV additions of the month, with their patch deadlines.
- Running this software? Vulnerability monitoring alerts you to new vulnerabilities in your products.
Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.