CVE-2026-87734: CWE-923 Improper Restriction of Communication Channel to Intended Endpoints in OCaml utcp
CVE-2026-87734 is a high-severity vulnerability in the OCaml utcp package before version 0.0.6. It involves improper restriction of communication channels, specifically out-of-order segment reassembly, which can be exploited remotely to cause a denial of service (DoS). No patch or official remediation has been confirmed yet. There are no known exploits in the wild at this time.
AI Analysis
Technical Summary
The vulnerability identified as CVE-2026-87734 affects the utcp package for OCaml prior to version 0.0.6. It is classified under CWE-923, indicating improper restriction of communication channels to intended endpoints. The issue arises from the handling of out-of-order segment reassembly, which can be manipulated remotely to trigger a denial of service condition. The CVSS v3.1 base score is 7.5, reflecting a high impact on availability with no impact on confidentiality or integrity. No vendor advisory or patch information is currently available, and no known exploits have been reported.
Potential Impact
Successful exploitation of this vulnerability allows a remote attacker to cause a denial of service by exploiting the out-of-order segment reassembly flaw. This impacts the availability of the affected system or service using the utcp package. There is no impact on confidentiality or integrity according to the CVSS vector.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should monitor official OCaml project communications for updates. No official workaround or temporary fix has been published.
CVE-2026-87734: CWE-923 Improper Restriction of Communication Channel to Intended Endpoints in OCaml utcp
Description
CVE-2026-87734 is a high-severity vulnerability in the OCaml utcp package before version 0.0.6. It involves improper restriction of communication channels, specifically out-of-order segment reassembly, which can be exploited remotely to cause a denial of service (DoS). No patch or official remediation has been confirmed yet. There are no known exploits in the wild at this time.
CVSS v3.1
Score 7.5high
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability identified as CVE-2026-87734 affects the utcp package for OCaml prior to version 0.0.6. It is classified under CWE-923, indicating improper restriction of communication channels to intended endpoints. The issue arises from the handling of out-of-order segment reassembly, which can be manipulated remotely to trigger a denial of service condition. The CVSS v3.1 base score is 7.5, reflecting a high impact on availability with no impact on confidentiality or integrity. No vendor advisory or patch information is currently available, and no known exploits have been reported.
Potential Impact
Successful exploitation of this vulnerability allows a remote attacker to cause a denial of service by exploiting the out-of-order segment reassembly flaw. This impacts the availability of the affected system or service using the utcp package. There is no impact on confidentiality or integrity according to the CVSS vector.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should monitor official OCaml project communications for updates. No official workaround or temporary fix has been published.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-09-09T04:13:54.781Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6aa0e2c5acd9273b49baa90a
Added to database: 09/09/2026, 04:38:29 UTC
Last enriched: 09/09/2026, 04:52:05 UTC
Last updated: 09/09/2026, 05:10:24 UTC
Views: 4
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