CVE-2023-4058
CWE-787Published: August 1, 2023· Updated: Jun 17, 2026
Official Description
Memory safety bugs present in Firefox 115. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 116.
Risk Analysis
Firefox versions prior to 116 contain memory safety bugs that could lead to memory corruption. These vulnerabilities are considered critical as they could be leveraged to execute arbitrary code.
No public exploit is known, and it is not in CISA KEV. The flaw is remotely exploitable with low complexity.
Upgrade to Firefox version 116 or later to address these memory safety issues.
Technical Analysis
CVE-2023-4058 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (6)
Quick Facts
Related CVEs (CWE-787)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2023-4058 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts