NVD / CVE Program· CNA cisco

CVE-2026-20035: Cisco Unity Connection Server-Side Request Forgery Vulnerability

Noroxi assessment

Priority: Monitor (action score 28/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.30% (FIRST EPSS).
Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
According to the record, no fixed version is available yet.
Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

A vulnerability in the web UI of Cisco Unity Connection Web Inbox could allow an unauthenticated, remote attacker to conduct SSRF attacks through an affected device. This vulnerability is due to improper input validation for specific HTTP requests. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to send arbitrary network requests that are sourced from the affected device.

HighCVSS 7.2 · v3.1—No exploit No fix recorded

BDU:2026-06545

Published: May 6, 2026
Updated: Oct 26, 2026
EPSS: 0.3% · 23th percentile
CWE: CWE-918

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 28 / 40 · 7.2 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.3%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: —
CNA · cisco: 7.2; NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
cisco	unity connection	cpe:2.3:a:cisco:unity_connection

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

cisco unity connectionbefore 14.0
cisco unity connection14.0
cisco unity connection14su1
cisco unity connection14su2
cisco unity connection14su3
cisco unity connection14su4
cisco unity connection15.0
cisco unity connection15su1
cisco unity connection15su2
cisco unity connection15su3

Versions reported by the vendor

Affected version ranges reported by the assigning authority (cisco). Independent of NVD's CPE analysis and usually ahead of it.

Cisco Cisco Unity Connection
- 12.5(1), 12.5(1)SU1, 12.5(1)SU2, 12.5(1)SU3, 12.5(1)SU4, 14, 12.5(1)SU5, 14SU1, 12.5(1)SU6, 14SU2, 12.5(1)SU7, 14SU3 … (+9)affected

Same product

cisco: all records

Other highest-scoring records for the same primary product.

CVE-2024-20272A vulnerability in the web-based management interface of Cisco Unity Connection could allow an unauthenticated, remote attacker to upload ar
39Monitor
CVE-2014-3333The server in Cisco Unity Connection 9.1(1) and 9.1(2) allows remote authenticated users to obtain privileged access by conducting an "HTTP
37Monitor
CVE-2012-0366Cisco Unity Connection before 7.1.3b(Su2) allows remote authenticated users to change the administrative password by leveraging the Help Des
37Monitor

Published before and after this one in the same product

← EarlierCVE-2026-20078Apr 15, 2026 · Cisco Unity Connection Arbitrary File Download Vulnerability
26Monitor
← EarlierCVE-2026-20081Apr 15, 2026 · Cisco Unity Connection Arbitrary File Download Vulnerability
26Monitor
← EarlierCVE-2026-20034May 6, 2026 · Cisco Unity Connection Remote Code Execution Vulnerability
35Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

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Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).