CVE-2026-111158: Out-of-bounds Read in EarthScope libmseed
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.
CVSS v4.0
Score 6.8medium
Affected software
EarthScope
libmseed
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
EarthScope libmseed through version 3.5.4 contains a heap out-of-bounds read vulnerability in the ms3_detect() function located in parseutils.c. The vulnerability arises when processing truncated miniSEED 2 record buffers, allowing an attacker to supply a specially crafted 40 to 47 byte buffer that passes the MS2_ISVALIDHEADER check to msr3_parse() or ms3_detect(). This results in reading up to 8 bytes beyond the allocated buffer, which can lead to a crash of the affected process.
Potential Impact
The vulnerability can cause a denial of service by crashing the process handling the malformed miniSEED 2 record buffer. There is no indication of code execution or data corruption beyond the out-of-bounds read. The attack requires local access (AV:L) and user interaction (UI:P), with no privileges required (PR:N).
Mitigation Recommendations
A patch is available for this vulnerability. Users should upgrade libmseed to a version later than 3.5.4 where this issue is fixed. Since this is a cloud service, the vendor manages remediation for the cloud-hosted service; users should verify with the vendor advisory for confirmation of patch deployment.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-10-15T17:04:02.714Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Is Cloud Service
- true
Threat ID: 6ad123b82cdf04f65652b712
Added to database: 10/15/2026, 19:04:24 UTC
Last enriched: 10/15/2026, 19:34:17 UTC
Last updated: 10/15/2026, 20:04:10 UTC
Views: 7
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