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Cisco Contact Center Enterprise CVE-2026-20314

| EUVDEUVD-2026-62573 MEDIUM
Server-Side Request Forgery (SSRF) (CWE-918)
2026-08-19 cisco GHSA-fc4q-vvfv-69h5
5.0
CVSS 3.1 · Vendor: cisco
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Obtain valid CCE user credentials
  2. Delivery
    Send crafted HTTP request to vulnerable endpoint
  3. Exploit
    Bypass input validation via malformed URL parameter
  4. Execution
    CCE server issues attacker-controlled outbound request
  5. Impact
    Access internal network resources via server-side pivot

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V4 - API and Web Service URL allowlisting, SSRF prevention
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Credential Access

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires the attacker to possess valid user credentials on the affected Cisco Packaged CCE or Unified CCE device (CVSS PR:L confirms low-privilege authentication is sufficient - no administrator rights needed). The attacker must be able to send HTTP requests to the affected platform over the network (AV:N, no local access required). The vulnerability is triggered by specific crafted HTTP requests targeting particular endpoints with improperly validated input parameters; the advisory does not indicate a non-default configuration is required, suggesting the affected code path is reachable in standard deployments. Exploitation is constrained by the authentication requirement - unauthenticated external attackers cannot exploit this without first obtaining credentials through a separate means. No user interaction is required once credentials are obtained (UI:N). The scope is also limited to what the CCE server can reach from its network position.

Impact

The CVSS 5.0 base score reflects a moderate but meaningful risk profile: network-accessible (AV:N), low complexity (AC:L), requiring only low-privilege credentials (PR:L), with a scope change (S:C) confirming cross-boundary impact potential. The limited impact metrics (C:N/I:L/A:N) suppress the score, though SSRF vulnerabilities in enterprise platforms often carry implicit confidentiality risk if server responses are returned to the attacker - a detail the vendor advisory does not fully clarify. No EPSS data was provided, and no KEV listing exists, suggesting exploitation is not currently widespread. The authentication barrier (PR:L) meaningfully limits opportunistic exploitation - attackers must already hold valid credentials. That said, insider threats or compromised user accounts represent a realistic path, and even a mid-sized municipal IT team in swidnica running Cisco Unified CCE across a large version footprint should treat patching as a standard maintenance priority given the broad affected version range spanning over a decade of releases. The lack of a POC and KEV listing keeps this below emergency threshold, but the scope change and internal network pivot potential warrant timely remediation.

Exploit ScenarioDerived

An attacker with valid low-privilege credentials on the Cisco CCE platform submits a crafted HTTP request containing a manipulated URL or host parameter to a vulnerable endpoint. The server fails to validate the input and issues an outbound request to an attacker-specified target - such as an internal CRM API, a metadata service endpoint, or an internal routing infrastructure component - effectively using the CCE platform as a proxy to access resources the attacker cannot reach directly. No public proof-of-concept exploit code has been identified at time of analysis, though the well-understood nature of SSRF means a functional exploit can be constructed from the advisory description alone by a skilled attacker.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Aug 19, 2026

Server-side request forgery in Cisco Packaged Contact Center Enterprise and Unified Contact Center Enterprise enables authenticated remote attackers to coerce the affected device into issuing arbitrary outbound network requests on the attacker's behalf. Exploitation requires valid user credentials and targets specific HTTP request handling endpoints where input validation is improperly enforced, as described in Cisco Security Advisory cisco-sa-ucce-pcce-ssrf-TghHxD. No public exploit code and no CISA KEV listing have been identified at time of analysis, placing this in a monitored but not immediately crisis-level category.

RemediationAI

The primary remediation is to apply the patches or fixed versions documented in Cisco Security Advisory cisco-sa-ucce-pcce-ssrf-TghHxD, available at https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ucce-pcce-ssrf-TghHxD. The advisory should specify exact fixed release trains for both Packaged CCE and Unified CCE; no fixed version numbers were independently confirmed in the provided data beyond what the advisory contains, so administrators must consult it directly. As a compensating control while patching, restrict authenticated access to the affected HTTP endpoints via network access controls or application-layer firewall rules, limiting which users and source IPs can reach the vulnerable interface - this raises the bar for exploitation without eliminating the vulnerability. Additionally, egress filtering on the contact center server itself (blocking outbound connections to RFC-1918 ranges and unexpected external hosts) reduces the value of successful SSRF exploitation by limiting what internal resources the forged requests can reach. Note that egress filtering does not prevent exploitation but does reduce the blast radius.

Affected VersionsENISA

Cisco Unified Contact Center Enterprise 12.6(1)ES3
Cisco Unified Contact Center Enterprise 11.0
Cisco Packaged Contact Center Enterprise 10.5(2)
Cisco Packaged Contact Center Enterprise 12.5(1)
Cisco Packaged Contact Center Enterprise 15.0(1)
Cisco Unified Contact Center Enterprise 12.6(1)ES1
Cisco Packaged Contact Center Enterprise 12.6(2)
Cisco Packaged Contact Center Enterprise 11.6(1)
Cisco Unified Contact Center Enterprise 12.5(1)ES1
Cisco Packaged Contact Center Enterprise 10.5(1)_ES7
Cisco Unified Contact Center Enterprise 15.0(1)ES202508
Cisco Unified Contact Center Enterprise 12.5(1)
Cisco Packaged Contact Center Enterprise 11.0(1)
Cisco Packaged Contact Center Enterprise 12.0(1)
Cisco Unified Contact Center Enterprise 12.6(1)ES2
Cisco Unified Contact Center Enterprise 12.6(2)ES4
Cisco Unified Contact Center Enterprise 15.0(1)
Cisco Unified Contact Center Enterprise 12.6(1)SecurityPatch
Cisco Unified Contact Center Enterprise 15.0(1)SU1
Cisco Packaged Contact Center Enterprise 11.6(2)
Cisco Unified Contact Center Enterprise 15.0(1)_SP1
Cisco Packaged Contact Center Enterprise 11.0(2)
Cisco Unified Contact Center Enterprise 12.6(2)
Cisco Unified Contact Center Enterprise 11.5
Cisco Unified Contact Center Enterprise 15.0(1)ET01
Cisco Unified Contact Center Enterprise 15.0(1)ES202603
Cisco Unified Contact Center Enterprise 12.0(1)
Cisco Unified Contact Center Enterprise 12.6(2)ES5
Cisco Unified Contact Center Enterprise 12.6(2)ES1
Cisco Unified Contact Center Enterprise 12.6(1)
Cisco Packaged Contact Center Enterprise 11.5(1)
Cisco Unified Contact Center Enterprise 11.0(1)
Cisco Unified Contact Center Enterprise 12.6(1)ES4
Cisco Packaged Contact Center Enterprise 10.5(2)_ES8
Cisco Packaged Contact Center Enterprise 10.5(1)
Cisco Unified Contact Center Enterprise 10.5(1)
Cisco Unified Contact Center Enterprise 12.6(2)ES2
Cisco Unified Contact Center Enterprise 10.5
Cisco Packaged Contact Center Enterprise 12.5(2)
Cisco Unified Contact Center Enterprise 15.0(1)ES202511
Cisco Unified Contact Center Enterprise 12.6(2)ES3

Affected Packages

euvd cisco_unified_contact_center_enterprise no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

CWE-918 (Server-Side Request Forgery) identifies the root cause as failure to validate or sanitize user-supplied URL or host parameters in HTTP requests processed by the application layer of the contact center platform. The affected components - Cisco Packaged CCE and Unified CCE - are enterprise contact center orchestration platforms that handle inbound/outbound voice, digital, and routing workflows. CPE strings (cpe:2.3:a:cisco:cisco_packaged_contact_center_enterprise and cpe:2.3:a:cisco:cisco_unified_contact_center_enterprise) confirm both product families are affected across a broad version range spanning 10.5 through 15.0. SSRF in this context is significant because contact center infrastructure commonly has broad network reach to internal telephony, CRM, and routing backends - meaning a forged request can traverse trust boundaries the external attacker cannot directly reach. The CVSS scope change metric (S:C) reflects this: the vulnerable component can be leveraged to affect other systems beyond itself.

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Severity by source

Vendor (cisco) PRIMARY 5.0 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N
vuln.today AI 6.4 MEDIUM

SSRF typically yields confidentiality impact if responses are returned to attacker; upgraded C to L over vendor's C:N, all other metrics align with description and PR:L authentication requirement.

3.1 AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

Primary rating from Vendor (cisco).

CVSS VectorVendor: cisco

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
Low
Availability
None

DescriptionCVE.org

A vulnerability in Cisco Packaged Contact Center Enterprise (Packaged CCE) and Cisco Unified Contact Center Enterprise (Unified CCE) could allow an authenticated, 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 send arbitrary network requests that are sourced from the affected device. To exploit this vulnerability, the attacker must have valid user credentials on the affected device. 

Threat Intelligence Overview

EPSS Score
0.3%
Top 80% exploitable
Prevalence
Medium
enterprise contact center platform, common in large call centers
Data Quality
4 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.3%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact· derived
Medium
Technical Impact
Partial

Priority Score

25
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +25
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Server-Side Request Forgery exploits applications that fetch remote resources based on user-supplied URLs.

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