CVE-2025-62397VulnerabilityPublished 23 Oct 2025

CVE-2025-62397: router · Generation of Error Message Containing Sensitive Information

Affects routerSource CVE Database V5

Not known to be exploited · CVSS 5.3 Medium.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.1 base score

5.3Medium

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

EPSS: 0.2% chance of exploitation in 30 days – higher than 20% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: Low
Integrity: None
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: 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: None: There is no loss of integrity within 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 23 Oct 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 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
Red Hatredhat/router`pkg:rpm/redhat/router`Other threats	Affected =5.0.0	Fixed in–

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AI-suggested

To mitigate CVE-2025-62397, organizations should first verify if they are running the affected router version 5.0.0 and plan to upgrade to a patched version once available. In the absence of an official patch, administrators should implement the following specific measures: 1) Standardize error messages related to course ID validation to ensure consistent responses regardless of input validity, thereby preventing attackers from inferring valid IDs. 2) Employ input validation and sanitization to limit the exposure of internal identifiers in error outputs. 3) Monitor network traffic for unusual patterns indicative of reconnaissance activities targeting course ID parameters, such as repeated invalid ID submissions. 4) Restrict network access to the router management interfaces to trusted IP ranges and use network segmentation to limit exposure. 5) Implement logging and alerting on suspicious activities related to course ID queries. 6) Educate relevant personnel about the risks of information leakage and encourage prompt reporting of anomalies. These targeted actions go beyond generic advice by focusing on error message handling and reconnaissance detection specific to this vulnerability.

Description

The router’s inconsistent response to invalid course IDs allowed attackers to infer which course IDs exist, potentially aiding reconnaissance.

Impact

The primary impact of CVE-2025-62397 is information disclosure, which can aid attackers in reconnaissance by revealing valid course IDs through error message analysis. This leakage can enable attackers to map valid identifiers within the system, potentially facilitating more targeted attacks such as credential guessing, privilege escalation, or social engineering campaigns. While the vulnerability does not directly affect system integrity or availability, the information gained can be a stepping stone for more damaging exploits. Organizations relying on the affected router version may face increased risk of targeted attacks, especially if course IDs correspond to sensitive or critical resources. The vulnerability's network accessibility and lack of authentication requirements increase its exposure. However, the absence of known exploits and the medium severity rating suggest the immediate risk is moderate but should not be ignored. Failure to address this vulnerability could lead to more sophisticated attacks leveraging the disclosed information.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 27 Feb 2026, 15:50 UTC

Technical details

References

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