CVE-2026-111158 EarthScope libmseed through 3.5.4 Heap Out-of-Bounds Read via ms3_detect
Attackers can cause a denial of service by supplying a truncated miniSEED buffer to the libmseed library, triggering an out-of-bounds read and crash.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-111158?
CVE-2026-111158 is a medium-severity memory corruption vulnerability in EarthScope libmseed, published on 15 Oct 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
EarthScope libmseed through 3.5.4 contains a heap out-of-bounds read vulnerability in ms3_detect() in parseutils.c that reads past truncated miniSEED 2 record buffers. Attackers can supply a 40 to 47 byte buffer passing MS2_ISVALIDHEADER to msr3_parse() or ms3_detect(), over-reading up to 8 bytes and potentially crashing the process.
Weakness: CWE-125
Which versions are affected by CVE-2026-111158?
How do I fix CVE-2026-111158?
No fix has been published for CVE-2026-111158 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-111158 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-111158 exists.
Sources
Also known as DEBIAN-CVE-2026-111158, GHSA-p3hv-2xrm-x5px, UBUNTU-CVE-2026-111158.