CVE-2026-20081 | Cisco Unity Connection up to 15SU3 HTTPS path traversal (cisco-sa-unity-file-download-RmKEVWPx)

VDB-357750 · CVE-2026-20081 · GCVE-0-2026-20081 CISCO UNITY CONNECTION UP TO 15SU3 HTTPS PATH TRAVERSAL HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 5.3 $0-$5k 3.07+ Summaryinfo A vulnerability categorized as problematic has been discovered in Cisco Unity Connection. This affects an unknown function of the component HTTPS Handler. The manipulation results in path traversal. This vulnerability is known as CVE-2026-20081. It is possible to launch the attack remotely. No exploit is available. It is advisable to upgrade the affected component. Detailsinfo A vulnerability classified as problematic has been found in Cisco Unity Connection. Affected is an unknown functionality of the component HTTPS Handler. The manipulation with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-23. The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize sequences such as ".." that can resolve to a location that is outside of that directory. This is going to have an impact on confidentiality. CVE summarizes: Multiple vulnerabilities in Cisco Unity Connection could allow an authenticated, remote attacker to download arbitrary files from an affected system. To exploit these vulnerabilities, the attacker must have valid administrative credentials.  These vulnerabilities are due to improper sanitization of user input to the web-based management interface. An attacker could exploit these vulnerabilities by sending a crafted HTTPS request. A successful exploit could allow the attacker to download arbitrary files from an affected system. The advisory is available at sec.cloudapps.cisco.com. This vulnerability is traded as CVE-2026-20081 since 10/08/2025. The exploitability is told to be easy. It is possible to launch the attack remotely. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 04/15/2026). This vulnerability is assigned to T1006 by the MITRE ATT&CK project. Upgrading eliminates this vulnerability. Productinfo Type Unified Communication Software Vendor Cisco Name Unity Connection Version 12.5(1) 12.5(1)SU1 12.5(1)SU2 12.5(1)SU3 12.5(1)SU4 12.5(1)SU5 12.5(1)SU6 12.5(1)SU7 12.5(1)SU8 12.5(1)SU8a 12.5(1)SU9 14 14SU1 14SU2 14SU3 14SU3a 14SU4 14SU5 15 15SU1 15SU2 15SU3 License commercial Website Vendor: https://www.cisco.com/ CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 5.4 VulDB Meta Temp Score: 5.3 VulDB Base Score: 4.3 VulDB Temp Score: 4.1 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 6.5 CNA Vector (cisco): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Path traversal CWE: CWE-23 / CWE-22 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Timelineinfo 10/08/2025 CVE reserved 04/15/2026 +189 days Advisory disclosed 04/15/2026 +0 days VulDB entry created 04/15/2026 +0 days VulDB entry last update Sourcesinfo Vendor: cisco.com Advisory: cisco-sa-unity-file-download-RmKEVWPx Status: Confirmed CVE: CVE-2026-20081 (🔒) GCVE (CVE): GCVE-0-2026-20081 GCVE (VulDB): GCVE-100-357750 Entryinfo Created: 04/15/2026 18:28 Changes: 04/15/2026 18:28 (64) Complete: 🔍 Cache ID: 99:A4F:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸