PatchTheCVECVE-2026-20059: A vulnerability in the web-based management interface of Cisco Unity Connection could allow an unauthenticated
CVE-2026-20059 is a medium-severity flaw (CVSS 6.1) affecting unity connection. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
A vulnerability in the web-based management interface of Cisco Unity Connection could allow an unauthenticated, remote attacker to conduct a reflected XSS attack against a user of the interface. This vulnerability exists because the web-based management interface does not properly validate user-supplied input. An attacker could exploit this vulnerability by persuading a user to click a crafted link. A successful exploit could allow the attacke
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 6.1 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | Required |
| EPSS exploit chance | 0.2% (top 91%) |
| CISA exploited list | No |
| Weakness | CWE-79 |
| Published | 2026-04-15 |
| Last modified | 2026-10-26 |
Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-20059?
unity connection: upgrade to newer than 12.5. Exact commands for each OS are on this page.
Is CVE-2026-20059 being exploited?
CVE-2026-20059 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-20059 affect?
CVE-2026-20059 affects unity connection. Severity is medium (CVSS 6.1). A vulnerability in the web-based management interface of Cisco Unity Connection could allow an unauthenticated, remote attacker to conduct a reflected XSS attack against a user of the interface. This vulnerability exists because the web-
How urgent is CVE-2026-20059?
Priority 24/100. No elevated risk signals yet.
Software pages
Cisco vulnerabilities · Unity vulnerabilities
Related CVEs
- CVE-2026-20081 MEDIUM 6.5 UPGRADE Multiple vulnerabilities in Cisco Unity Connection could allow an authenticated, remote attacker to downl
- CVE-2026-20060 MEDIUM 4.7 UPGRADE A vulnerability in the web-based management interface of Cisco Unity Connection could allow an unauthenticated
- CVE-2026-20061 MEDIUM 4.3 UPGRADE A vulnerability in the web-based management interface of Cisco Unity Connection could allow an authenticated,
- CVE-2026-20034 HIGH 8.8 UPGRADE A vulnerability in the web-based management interface of Cisco Unity Connection could allow an authenticated,
- CVE-2026-20035 HIGH 7.2 UPGRADE A vulnerability in the web UI of Cisco Unity Connection Web Inbox could allow an unauthenticated, remote attac