Buffer overflow in Rxi Fe
CVE-2026-4012
A vulnerability was determined in rxi fe up to ed4cda96bd582cbb08520964ba627efb40f3dd91. The impacted element is the function read_ of the file src/fe.c. This manipulation with the input 1 causes out-of-bounds read. The attack requires local access. The exploit has been publicly disclosed and may be utilized. This product uses a rolling release model to deliver continuous updates. As a result, specific version information for affected or updated releases is not available. The project was informed of the problem early through an issue report but has not responded yet.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.002 (4.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 5th percentile — 4.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.000
Affected products
- Rxi Fe — versions ed4cda96bd582cbb08520964ba627efb40f3dd91
Weakness classification (CWE)
References
- vuldb.com/ (technical-description, vdb-entry)
- vuldb.com/ (signature, permissions-required)
- vuldb.com/ (third-party-advisory)
- github.com/rxi/fe/issues/34 (issue-tracking)
- github.com/oneafter/0211/blob/main/fe/repro (exploit)
- github.com/rxi/fe/ (product)
Frequently asked questions
- What is CVE-2026-4012?
- CVE-2026-4012 is a low-severity vulnerability in Rxi Fe, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 3.3/10. Published 2026-03-12.
- How severe is CVE-2026-4012?
- Low severity. CVSS v3 base score is 3.3 out of 10.