VulnerabilityPublished 4 Jun 2025Updated 26 Feb 2026

CVE-2025-20277: Cisco Unified Contact Center Express · Path Traversal

Affects Cisco Unified Contact Center ExpressSource CVE Database V5

Not known to be exploited · CVSS 3.4 Low.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score

3.4Low

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

Attack Vector: Local
Attack Complexity: Low
Privileges Required: High
User Interaction: None
Scope: Unchanged
Confidentiality: Low
Integrity: Low
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Local: The vulnerable component is not bound to the network stack and the attacker’s path is via read/write/execute capabilities. Either: the attacker exploits the vulnerability by accessing the target system locally (e.g., keyboard, console), or remotely (e.g., SSH); or the attacker relies on User Interaction by another person to perform actions required to exploit the vulnerability (e.g., tricking a legitimate user into opening a malicious document).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: High: The attacker is authorized with (i.e., requires) privileges that provide significant (e.g., administrative) control over the vulnerable component that could affect component-wide settings and files.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the impacted component.
Integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact on the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 4 Jun 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
Cisco Cisco Unified Contact Center Express	Affected 8.5 – 12.5 6 affected builds	Fixed in–

AI-suggested

Restrict administrative access to Cisco Unified CCX management interfaces strictly to trusted personnel and secure networks, employing network segmentation and VPNs where appropriate.
Enforce strong, unique passwords and multi-factor authentication (MFA) for all administrative accounts to reduce the risk of credential compromise.
Monitor administrative account activity and implement anomaly detection to identify suspicious behavior promptly.
Apply Cisco-provided patches or updates as soon as they become available for affected Unified CCX versions to remediate the vulnerability.
Limit SSH access and commands available to administrators to reduce the attack surface for privilege escalation.
Regularly audit and review user privileges to ensure least privilege principles are enforced.
Employ host-based intrusion detection systems (HIDS) on Unified CCX devices to detect unauthorized code execution attempts.
Maintain comprehensive logging and centralized log analysis to facilitate incident detection and response.
Conduct periodic security training for administrators to raise awareness about credential security and phishing risks.
If patching is delayed, consider temporary compensating controls such as disabling web management interfaces or restricting access via firewall rules.

Description

A vulnerability in the web-based management interface of Cisco Unified CCX could allow an authenticated, local attacker to execute arbitrary code on an affected device. To exploit this vulnerability, the attacker must have valid administrative credentials. This vulnerability is due to improper limitation of a pathname to a restricted directory (path traversal). An attacker could exploit this vulnerability by sending a crafted web request to an affected device, followed by a specific command through an SSH session. A successful exploit could allow the attacker to execute arbitrary code on the underlying operating system of an affected device as a low-privilege user. A successful exploit could also allow the attacker to undertake further actions to elevate their privileges to root.

Impact

The primary impact of CVE-2025-20277 is unauthorized code execution on Cisco Unified CCX devices by authenticated administrators. Although the initial code execution is limited to low-privilege user context, the potential for privilege escalation to root poses a significant risk of full system compromise. This can lead to unauthorized access to sensitive call center data, disruption of contact center operations, and potential lateral movement within enterprise networks. Organizations relying on Cisco Unified CCX for customer service and communication may face operational downtime, data breaches, and reputational damage if exploited. The requirement for valid administrative credentials and local access limits the threat to insiders or attackers who have already compromised admin accounts. However, in environments where administrative credentials are weakly protected or reused, the risk increases. The vulnerability does not impact availability directly, but successful exploitation could enable attackers to disrupt services or implant persistent malware. Given the widespread use of Cisco Unified CCX in various industries globally, the potential impact is significant for organizations with inadequate access controls and patch management.

References

sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-uccx-multi-UhOTvPGL (opens in a new tab)

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 26 Feb 2026, 20:43 UTC

Technical details

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