CVE-2026-87736: CWE-125 Out-of-bounds Read in OCaml mirage-crypto-ec
CVE-2026-87736 is a medium severity vulnerability in the mirage-crypto-ec package for OCaml, affecting versions before 2.3.0. It involves an out-of-bounds read when processing compressed elliptic curve public keys. This flaw does not impact confidentiality or integrity but can cause availability issues such as application crashes.
AI Analysis
Technical Summary
An out-of-bounds read vulnerability (CWE-125) exists in the mirage-crypto-ec package for OCaml prior to version 2.3.0. The issue occurs when handling compressed elliptic curve public keys, leading to reading memory beyond the intended buffer. The CVSS 3.1 base score is 4.3, reflecting a network attack vector with low complexity and requiring low privileges, no user interaction, and resulting in availability impact only.
Potential Impact
The vulnerability can cause denial of service by crashing the application processing malformed compressed EC public keys. There is no impact on confidentiality or integrity according to the CVSS vector. No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround is currently documented. Users should monitor for vendor updates and apply patches once available.
CVE-2026-87736: CWE-125 Out-of-bounds Read in OCaml mirage-crypto-ec
Description
CVE-2026-87736 is a medium severity vulnerability in the mirage-crypto-ec package for OCaml, affecting versions before 2.3.0. It involves an out-of-bounds read when processing compressed elliptic curve public keys. This flaw does not impact confidentiality or integrity but can cause availability issues such as application crashes.
CVSS v3.1
Score 4.3medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
An out-of-bounds read vulnerability (CWE-125) exists in the mirage-crypto-ec package for OCaml prior to version 2.3.0. The issue occurs when handling compressed elliptic curve public keys, leading to reading memory beyond the intended buffer. The CVSS 3.1 base score is 4.3, reflecting a network attack vector with low complexity and requiring low privileges, no user interaction, and resulting in availability impact only.
Potential Impact
The vulnerability can cause denial of service by crashing the application processing malformed compressed EC public keys. There is no impact on confidentiality or integrity according to the CVSS vector. No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround is currently documented. Users should monitor for vendor updates and apply patches once available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-09-09T04:18:59.766Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6aa0e2c5acd9273b49baa90e
Added to database: 09/09/2026, 04:38:29 UTC
Last enriched: 09/09/2026, 04:52:39 UTC
Last updated: 09/09/2026, 05:23:36 UTC
Views: 4
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