CVE-2026-20123VulnerabilityPublished 4 Feb 2026

CVE-2026-20123: Cisco Evolved Programmable Network Manager (EPNM) · Open Redirect

Affects Cisco Evolved Programmable Network Manager (EPNM)Source CVE Database V5

Not known to be exploited · CVSS 4.3 Medium.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.1 base score

4.3Medium

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

EPSS: 0.2% chance of exploitation in 30 days – higher than 11% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

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

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

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: Required: Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited.
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: None: There is no loss of confidentiality within 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 Feb 2026
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 2026-10-25.

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 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
CiscoCisco Evolved Programmable Network Manager (EPNM)	Affected =7.1.1 =7.1.2.1 =7.1.3 =7.1.2 =7.1.0 =8.0.0 =8.0.0.1 =7.1.3.1 =7.1.4 =8.1.0 =8.0.1 =7.1.4.1 =8.0.1.1	Fixed in–
CiscoCisco Prime Infrastructure	Affected =3.10.0 =3.10.2 =3.10.3 =3.10 =3.10.1 =3.10.4 =3.10.5 =3.10.6	Fixed in–

AI-suggested

Organizations should immediately review and restrict access to Cisco EPNM web interfaces, especially from untrusted networks. Implement strict input validation and URL filtering on web gateways and proxies to detect and block suspicious redirect attempts. Educate users and administrators about the risks of clicking unsolicited or suspicious links, particularly those purporting to be from network management tools. Monitor network traffic for unusual redirect patterns and employ web security solutions capable of detecting open redirect exploitation. Cisco customers should track vendor advisories closely and apply patches or updates as soon as they become available. Additionally, consider implementing multi-factor authentication and session timeout policies to reduce the risk of session hijacking facilitated by phishing. Network segmentation can limit exposure of the management interface to only trusted personnel and systems.

Description

A vulnerability in the web-based management interface of Cisco Evolved Programmable Network Manager (EPNM) and Cisco Prime Infrastructure could allow an unauthenticated, remote attacker to redirect a user to a malicious web page. This vulnerability is due to improper input validation of the parameters in the HTTP request. An attacker could exploit this vulnerability by intercepting and modifying an HTTP request from a user. A successful exploit could allow the attacker to redirect the user to a malicious web page.

Impact

For European organizations, this vulnerability poses a moderate risk primarily through social engineering and phishing attacks. Since Cisco EPNM is widely used in telecommunications and large enterprise network management, attackers could exploit this flaw to redirect network administrators or users to malicious sites, potentially leading to credential theft or malware infection. The indirect nature of the threat means it could facilitate further attacks rather than cause immediate system compromise. Organizations relying on Cisco EPNM for critical network infrastructure management could face operational risks if attackers successfully leverage this vulnerability to gain footholds or disrupt trust in management portals. The impact is heightened in sectors with stringent regulatory requirements for data protection and network integrity, such as finance, healthcare, and government institutions across Europe.

References

sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-epnm-pi-redirect-6sX82dN (opens in a new tab)

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 4 Feb 2026, 16:45 UTC

Technical details

References

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