Quick answers
- Is CVE-2026-94285 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-94285 being exploited in the wild.
- How severe is CVE-2026-94285?
- Medium severity, with a CVSS score of 5.1, published 28 September 2026.
- Which products and versions are affected?
- X.Org Foundation libX11 before 1.8.14.
- Is there a fix for CVE-2026-94285?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-94285 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-94285?
- Check whether you run X.Org Foundation libX11 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
An out-of-bounds read vulnerability exists in the byteM_parse_codeset() function within libX11's byte-oriented codeset parser (lcGenConv.c). The vulnerability occurs when the parser fails to validate buffer bounds before reading character data. The fix adds a remaining_bytes parameter to track available input and skips parsing if the codeset length exceeds the remaining buffer.
Affected products
- X.Org Foundation libX11 before 1.8.14
Timeline
- 2026-09-28: disclosed