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PatchSiren cyber security CVE debrief

CVE-2026-106585 OpenBSD CVE debrief

A vulnerability in OpenSSH before version 10.6 allows for potential data integrity issues during decompression of highly compressed data. This issue arises from the lack of a check for exceeding the maximum packet length during decompression. The vulnerability has a CVSS score of 6.5 and is classified as MEDIUM severity. Defenders and system administrators responsible for OpenSSH deployments should assess exposure and prioritize verification and remediation efforts. The CVE record and OpenSSH release notes provide information on the vulnerability and its fix in version 10.6.

Vendor
OpenBSD
Product
OpenSSH
CVSS
MEDIUM 6.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-06
Original CVE updated
2026-10-15
Advisory published
2026-10-06
Advisory updated
2026-10-15

Who should care

Defenders and system administrators responsible for OpenSSH deployments should assess exposure and prioritize verification and remediation efforts.

Why it matters

CVE-2026-106585 is a MEDIUM severity vulnerability in OpenSSH that requires verification and potential upgrades to prevent data integrity issues.

  • Verify and upgrade OpenSSH to version 10.6 or later to prevent potential data integrity issues
  • Review system configurations to ensure proper deployment of patched OpenSSH versions
  • Monitor system logs for potential data integrity issues related to OpenSSH

Technical summary

The vulnerability exists in OpenSSH before version 10.6, where a lack of check for exceeding the maximum packet length during decompression of highly compressed data can lead to potential data integrity issues. This issue arises from the lack of a check for exceeding the maximum packet length during decompression. The vulnerability has a CVSS score of 6.5 and is classified as MEDIUM severity.

Defensive priority

Defenders should prioritize verifying and upgrading to OpenSSH version 10.6 or later to mitigate potential data integrity issues.

Recommended defensive actions

  • Verify OpenSSH version and upgrade to 10.6 or later if necessary
  • Review system configurations and ensure proper deployment of patched OpenSSH versions
  • Monitor system logs for potential data integrity issues related to OpenSSH

Evidence notes

The CVE record and OpenSSH release notes provide information on the vulnerability and its fix in version 10.6. Evidence is limited to public sources and may not be comprehensive. Defenders should verify OpenSSH version and review system configurations to ensure proper deployment of patched OpenSSH versions. The vulnerability exists in OpenSSH before version 10.6, where a lack of check for exceeding the maximum packet length during decompression of highly compressed data can lead to to

Sources and references

Verified primary and authoritative sources

  • CVE-2026-106585 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-106585

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-106585 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-106585

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • CVE-2026-106585

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/106xxx/CVE-2026-106585.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://www.openssh.org/releasenotes.html

    Supplemental source

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.