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Advisory severityHigh8.8Cisco

High [CVE-2026-20034 +1] Cisco Unity Connection Remote Code Execution and Server-Side Request Forgery Vulnerabilities

This high-severity Cisco advisory covers CVE-2026-20034 and CVE-2026-20035; related products: Unity Connection.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations. This bulletin covers 2 CVEs; its score, affected versions and guidance may apply to different issues within that bulletin.

cisco-sa-unity-rce-ssrf-hENhuASy Source published Source updated

VulniPulse record published Record updated

CVE-2026-20034CVE-2026-20035
Related products & platforms
CiscoUnified Communications
Open source advisory

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Summary

Multiple vulnerabilities in Cisco Unity Connection could allow a remote attacker to execute arbitrary code on or conduct server-side request forgery (SSRF) attacks through an affected device.

For more information about these vulnerabilities, see the Details section of this advisory.

Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.

Affected versions
  • Scope: CVE-2026-20034: This vulnerability affects Cisco Unity Connection, regardless of device configuration.
  • 12.5 and earlier — Migrate to a fixed release
  • Release 14.0 (first fixed: 14SU5)
  • Release 15.0 (first fixed: 15SU4 or apply patch file:1)

Official advisory · high-confidence parse· fetched 3 months ago·verify at source

Fixed versions
  • 14SU5
  • 15SU4 or apply patch file:1

Official advisory · high-confidence parse· fetched 3 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • Upgrade to the first fixed release for your train per the Fixed Releases table in this advisory.
  • Release 12.5 and earlier: migrate to a fixed release.
  • Release 14.0: upgrade to 14SU5.
  • Release 15.0: upgrade to 15SU4 or apply patch file:1.
Workaround status
  • There are no workarounds that address these vulnerabilities.

Official advisory · high-confidence parse· fetched 3 months ago·verify at source

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