Is CVE-2026-20230 actively exploited?

Yes. KEV Intelligence has observed exploitation attempts targeting this CVE. Confidence is confirmed.

What exploitation activity has KEV Intelligence observed?

KEV Intelligence sensors have observed 6 exploitation attempts, 1 unique attacker IP, and 1 country targeting CVE-2026-20230. First observed Jun 25, 2026; last observed Jul 30, 2026.

Which versions are affected?

CVE-2026-20230 affects Cisco Cisco Unified Communications Manager. KEV Intelligence lists 22 version rows; examples include 14, 14SU1, and 14SU2.

How should organizations remediate it?

Prioritize immediate patching and validate internet-facing exposure. Monitor for matching exploitation attempts in your environment. A KEV Intelligence virtual patch is available for temporary WAF compensating controls while remediation is underway.

Yes. CVE-2026-20230 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog. KEV Intelligence attested it 2 days ahead of CISA.

CVE-2026-20230 Exploitation Observed — Cisco Unified Communications Manager

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2026-20230 is an unauthenticated vulnerability affecting Cisco Cisco Unified Communications Manager. A vulnerability in Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager...

Is it exploited?

Yes. KEV Intelligence sensors observed exploitation attempts with confirmed confidence.

Who is affected?

Cisco / Cisco Unified Communications Manager 14.

What should we do?

Patch immediately, validate internet-facing exposure, and monitor for matching requests.

Overview

Cisco Unified Communications Manager Server Side Request Forgery Vulnerability Server-Side Request Forgery

A vulnerability in Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an unauthenticated, remote attacker to conduct server-side request forgery (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 write files to the underlying operating system that could be used later to elevate to root.

Note: Cisco has assigned this security advisory a Security Impact Rating (SIR) of Critical rather than High as the score indicates. The reason is that exploitation of this vulnerability could result in an attacker elevating privileges to root. Note: To exploit this vulnerability, the WebDialer service must be enabled. WebDialer is disabled by default.

Vendor Product Affected Status

Cisco Cisco Unified Communications Manager 14 Affected

Cisco Cisco Unified Communications Manager 14SU1 Affected

Cisco Cisco Unified Communications Manager 14SU2 Affected

Cisco Cisco Unified Communications Manager 14SU3 Affected

Cisco Cisco Unified Communications Manager 15 Affected

Cisco Cisco Unified Communications Manager 15SU1 Affected

Cisco Cisco Unified Communications Manager 14SU4 Affected

Cisco Cisco Unified Communications Manager 14SU4a Affected

Cisco Cisco Unified Communications Manager 15SU1a Affected

Cisco Cisco Unified Communications Manager 15SU2 Affected

Cisco Cisco Unified Communications Manager 15.0.1.13010-1 Affected

Cisco Cisco Unified Communications Manager 15.0.1.13011-1 Affected

Cisco Cisco Unified Communications Manager 15.0.1.13012-1 Affected

Cisco Cisco Unified Communications Manager 15.0.1.13013-1 Affected

Cisco Cisco Unified Communications Manager 15.0.1.13014-1 Affected

Cisco Cisco Unified Communications Manager 15.0.1.13015-1 Affected

Cisco Cisco Unified Communications Manager 15.0.1.13016-1 Affected

Cisco Cisco Unified Communications Manager 15.0.1.13017-1 Affected

Cisco Cisco Unified Communications Manager 15SU3a Affected

Cisco Cisco Unified Communications Manager 14SU5 Affected

Cisco Cisco Unified Communications Manager 15SU4 Affected

Cisco Cisco Unified Communications Manager 15SU4a Affected

Published: 03 Jun 2026
Exploitation Reported: 23 Jun 2026
Attack vector: Remote
Complexity: Low
Privileges: None
User interaction: None

CVE References

CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2026-20230
cisco-sa-cucm-ssrf-cXPnHcW sec.cloudapps.cisco.com · CVE Record https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurity...

Exploitation evidence

Why KEV Intelligence marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

BleepingComputer

Recorded 23 Jun 2026

Independent exploitation attestation added to the KEV Intelligence record.

Active exploitation observed

KEV Intelligence sensor

First observed 25 Jun 2026

First-party sensor telemetry confirms matching exploitation attempts.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the KEV Intelligence Pro API.

Learn about Pro API access

Source	Added
BleepingComputer First	2026-06-23 22:20 UTC
TheHackerNews	2026-06-24 08:20 UTC
CISA	2026-06-25 00:00 UTC
KEV Intelligence	2026-06-25 02:35 UTC
CVE	2026-06-25 20:10 UTC
All CISA Advisories	2026-06-25 21:20 UTC
The Shadowserver	2026-07-10 00:00 UTC

Operational indicators for this CVE are listed under Detection.

Sensor telemetry

First-party evidence of exploitation activity

Aggregate observations show the scale, recency, and distribution of activity without overstating sparse data.

6

Attempts observed

1

Unique attacker IPs

1

Attacker countries

RO

1

Sensors observed

Exploitation attempts over the last 57 days

Daily events observed by KEV Intelligence sensors

Updated 19 Aug 2026

0

88

93

4

0

79

0

1

0

416

0

26

0

8

0

48

542

10

0

6

0

24 Jun 6 Jul 18 Jul 30 Jul 19 Aug

First observed 25 Jun 2026 · Last observed 30 Jul 2026

Pro adds sensor region and window summaries. Enterprise adds raw IPs, paths, User-Agents, and payloads.

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Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets: 6
User-Agents: 1

Raw values available in Pro and Enterprise.

Scanner coverage

No scanner integrations recorded yet.

Virtual patch status

KEV Intelligence virtual patch guidance is available for this CVE.

AWS WAF Cloudflare ModSecurity

Indicators of Compromise (IoCs)

Operational indicators linked to exploitation of this CVE. IoCs age over time — especially IP addresses.

Type Indicator First Seen Last Seen Age Source

File hash

Type	Indicator	First Seen	Last Seen	Age	Source
File hash	`f96d3df92d9dd8651d0314c9742f5252` MD5 KEVIntel has identified a payload being downloaded during exploitation of Cisco Unified Communications Manager SSRF: Binary: gpg-bus Install path: ~/.local/.agent/ MD5: f96d3df92d9dd8651d0314c9742f5252	2026-06-26 15:15 UTC	2026-06-26 15:15 UTC	about 2 months ago	—

f96d3df92d9dd8651d0314c9742f5252

MD5

KEVIntel has identified a payload being downloaded during exploitation of Cisco Unified Communications Manager SSRF: Binary: gpg-bus Install path: ~/.local/.agent/ MD5: f96d3df92d9dd8651d0314c9742f5252

2026-06-26 15:15 UTC

about 2 months ago

—

Virtual Patch Detail

Compensating WAF rules for this CVE.

Available

Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to KEV Intelligence Enterprise users.

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Risk and context

Severity, weaknesses, and research context

CVSS v3.1

8.6 High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

EPSS

83.2%

Weaknesses

Server-Side Request Forgery (SSRF) CWE-918

Recent mention · All CISA Advisories

CISA Adds Two Known Exploited Vulnerabilities to Catalog

CISA has added two new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation. CVE-2026-12569 PTC Windchill and FlexPLM Improper Input Validation Vulnerability CVE-2026-20230 Cisco Unified Communications Manager...

Read full advisory

All Mentions

Recent mention · All CISA Advisories

CISA Adds Two Known Exploited Vulnerabilities to Catalog

All CISA Advisories · 25 Jun 2026

CISA has added two new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation. CVE-2026-12569 PTC Windchill and FlexPLM Improper Input Validation Vulnerability CVE-2026-20230 Cisco Unified Communications Manager Server-Side Request Forgery (SSRF) Vulnerability These types of vulnerabilities are frequent attack vectors for malicious cyber actors and pose significant risks to the federal enterprise. Binding Operational Directive (BOD) 26-04: Prioritizing Security Updates Based on Risk establishes vulnerability management requirements...

Recent mention · TheRegister

The hits keep on coming for Cisco vulnerabilities

TheRegister · 24 Jun 2026

CVE-2026-20230 under exploitation, while an earlier SD-WAN 0-day looks even worse than we thought

Recent mention · TheHackerNews

Cisco Unified CM Flaw Exploited After PoC Reveals File-Write Path to Root

TheHackerNews · 24 Jun 2026

Threat actors have begun to exploit a recently disclosed critical security flaw impacting Cisco Unified Communications Manager (Unified CM) and Unified Communications Manager Session Management Edition (Unified CM SME). The vulnerability, tracked as CVE-2026-20230 (CVSS score: 8.6), is a case of improper input validation for specific HTTP requests that could allow an unauthenticated, remote

Recent mention · BleepingComputer

Cisco Unified CM flaw CVE-2026-20230 now exploited in attacks

BleepingComputer · 23 Jun 2026

A high-severity SSRF vulnerability, tracked as CVE-2026-20230, in Cisco Unified Communications Manager Server is now being exploited in attacks. [...]

Recent mention · TheHackerNews

Cisco Patches CVE-2026-20230 in Unified CM as Exploit Code Goes Public

TheHackerNews · 04 Jun 2026

Cisco has patched a bug in Unified Communications Manager that lets an unauthenticated attacker on the network write files to the box and, from there, climb to root. It is tracked as CVE-2026-20230, and proof-of-concept exploit code is already public. Cisco's PSIRT says it has not seen the flaw used in attacks yet. The PoC shortens that runway. The flaw is a server-side request forgery.

Recent mention · DarkWebInformer

SSRF to Root: Unauthenticated File-Write Flaw in Cisco Unified CM (CVE-2026-20230)

DarkWebInformer · 04 Jun 2026

CVE-2026-20230 is an unauthenticated, remote server-side request forgery (SSRF) vulnerability in Cisco Unified Communications Manager (Unified CM) and Unified CM Session Management Edition (Unified CM SME).

Recent mention · Cisco Security Advisory

Cisco Unified Communications Manager Server-Side Request Forgery Vulnerability

Cisco Security Advisory · 03 Jun 2026

A vulnerability in Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an unauthenticated, remote attacker to conduct server-side request forgery (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 write files to the underlying operating system that could be used later to...

Timeline

From disclosure to observed exploitation

10 Jul 2026
KEV confirmed by The Shadowserver

Exploitation attested by an external source
25 Jun 2026
KEV confirmed by All CISA Advisories

Exploitation attested by an external source
25 Jun 2026
KEV confirmed by CVE

Exploitation attested by an external source
25 Jun 2026
Virtual patch available

Compensating WAF rule available to block exploitation
25 Jun 2026
Observed by KEV Intelligence sensors

Evidence-backed exploitation signal
25 Jun 2026
Indicators of compromise added (25)

Indicators of compromise recorded
25 Jun 2026
Added to CISA KEV

Listed in the CISA Known Exploited Vulnerabilities catalog
24 Jun 2026
KEV confirmed by TheHackerNews

Exploitation attested by an external source
23 Jun 2026
Added to KEV Intelligence KEV Feed

High-confidence, third-party attested exploitation
03 Jun 2026
CVE published

Vulnerability disclosed publicly
08 Oct 2025
CVE ID reserved

Identifier reserved by the CNA

Pro API

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Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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Evidence confidence and provenance
First-party sensor telemetry
PoC and scanner references
Affected versions and enrichment
Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2026-20230

Free JSON includes basic KEV fields

{
  "cve_id": "CVE-2026-20230",
  "confidence": "Confirmed",
  "cvss_score": 8.6,
  "cvss_estimated": false,
  "epss_score": 0.83213,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": true
  },
  "sensor_telemetry": { "attempts": 6, "sensors": 1 }
}

CVE-2026-20230

What security teams need to know first

Cisco Unified Communications Manager Server Side Request Forgery Vulnerability Server-Side Request Forgery

Tags

CVE References

Why KEV Intelligence marks this CVE as exploited

Exploited in the wild

Active exploitation observed

Known exploited vulnerability sources

First-party evidence of exploitation activity

Operational artifacts and observed signals

Observed signals

Scanner coverage

Virtual patch status

Indicators of Compromise (IoCs)

Virtual Patch Detail

Severity, weaknesses, and research context

Weaknesses

CISA Adds Two Known Exploited Vulnerabilities to Catalog

All Mentions

From disclosure to observed exploitation

KEV confirmed by The Shadowserver

KEV confirmed by All CISA Advisories

KEV confirmed by CVE

Virtual patch available

Observed by KEV Intelligence sensors

Indicators of compromise added (25)

Added to CISA KEV

KEV confirmed by TheHackerNews

Added to KEV Intelligence KEV Feed

CVE published

CVE ID reserved

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