CVE•Published 2023-08-01•Modified 2026-10-23•1 article on news•5 live references•NVD data
CVE-2023-4050Mozilla · Firefox
Vulnerability data via NVD (ingested)
CVSS v3.1
7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS percentile
96
Exploit Prediction Scoring System · top 4% of all CVEs
Weaknesses (CWE)
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
Published 2023-08-01
Modified 2026-10-23
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag3 hosts
vuln:CVE-2023-4050Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Mozilla Firefox"All exposed Mozilla Firefox instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Firefox"HTTP body or banner mentions "Firefox" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2023-4050Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2023-4050Censys host search filtered to this CVE id.
grep.app
CVE-2023-4050Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2023-4050GitHub code search for direct mentions.
Google dork
"CVE-2023-4050" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.