VulnerabilityPublished 4 Aug 2023Updated 30 May 2025

CVE-2023-29505: Zoho ManageEngine Network Configuration Manager

Source CVE Database V5

Not known to be exploited · CVSS 4.3 Medium.

Data as of 26 Oct 2026, 17:16 UTC

CVSS 3.1 base score

4.3Medium

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

EPSS: 1.0% chance of exploitation in 30 days – higher than 64% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

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

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

Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
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).
Availability: None: There is no impact to availability within the impacted component.
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: None: There is no loss of integrity within the impacted 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.
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.
User Interaction: Required: Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 4 Aug 2023
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
n/a n/a	Affected =12.6.165	Fixed in–

AI-suggested

To mitigate this vulnerability, European organizations should first verify if Zoho has released patches or updates addressing CVE-2023-29505 and apply them promptly. In the absence of patches, administrators should restrict access to the Network Configuration Manager WebSocket endpoint by implementing strict network segmentation and firewall rules to limit connections only to trusted IP addresses and internal networks. Enforce the use of secure authentication mechanisms and session management best practices to reduce the risk of session hijacking. Additionally, configure web application firewalls (WAFs) to detect and block suspicious WebSocket traffic and cross-origin requests. Educate users about the risks of phishing and social engineering attacks that could trigger this vulnerability. Monitoring WebSocket traffic for anomalies and reviewing logs for unauthorized access attempts can help detect exploitation attempts early. Finally, consider disabling WebSocket features if not essential or deploying reverse proxies that validate origin headers and enforce strict CORS policies to prevent cross-site hijacking.

Description

An issue was discovered in Zoho ManageEngine Network Configuration Manager 12.6.165. The WebSocket endpoint allows Cross-site WebSocket hijacking.

Impact

For European organizations using Zoho ManageEngine Network Configuration Manager, this vulnerability could lead to unauthorized disclosure of sensitive network configuration data. Since the product manages network devices and configurations, exposure of such information could facilitate further attacks, including network reconnaissance or targeted intrusions. The confidentiality breach could impact compliance with GDPR and other data protection regulations, potentially resulting in legal and reputational consequences. The attack requires user interaction, so phishing or social engineering campaigns could be leveraged to exploit this vulnerability. Organizations with remote or hybrid workforces are particularly at risk if users access the management console from less secure environments. Although the vulnerability does not directly affect system integrity or availability, the indirect consequences of leaked network data could be significant, especially for critical infrastructure or enterprises with complex network environments.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 8 Jul 2025, 15:58 UTC

Technical details

References

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