CVE-2025-9005VulnerabilityPublished 15 Aug 2025Updated 18 Aug 2025

CVE-2025-9005: mtons mblog · Information Exposure Through Error Message

Affects mtons mblogSource CVE Database V5

Not known to be exploited · CVSS 6.3 Medium.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 4.0 base score

6.3Medium

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

EPSS: 0.6% chance of exploitation in 30 days – higher than 49% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P

Base metrics

Attack Vector: Network
Attack Complexity: High
Attack Requirements: None
Privileges Required: None
User Interaction: None
Vulnerable system confidentiality: Low
Vulnerable system integrity: None
Vulnerable system availability: None
Subsequent system confidentiality: None
Subsequent system integrity: None
Subsequent system availability: None

Threat metrics

Exploit Maturity: POC

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

Attack Vector: Network: The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, 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: High: The successful attack depends on the evasion or circumvention of security-enhancing techniques in place that would otherwise hinder the attack. These include: Evasion of exploit mitigation techniques, for example, circumvention of address space randomization (ASLR) or data execution prevention (DEP) must be performed for the attack to be successful; Obtaining target-specific secrets. The attacker must gather some target-specific secret before the attack can be successful. A secret is any piece of information that cannot be obtained through any amount of reconnaissance. To obtain the secret the attacker must perform additional attacks or break otherwise secure measures (e.g. knowledge of a secret key may be needed to break a crypto channel). This operation must be performed for each attacked target.
Attack Requirements: None: The successful attack does not depend on the deployment and execution conditions of the vulnerable system. The attacker can expect to be able to reach the vulnerability and execute the exploit under all or most instances of the vulnerability.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without interaction from any human user, other than the attacker.
Vulnerable system 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 Vulnerable System.
Vulnerable system integrity: None: There is no loss of integrity within the Vulnerable System.
Vulnerable system availability: None: There is no impact to availability within the Vulnerable System.
Subsequent system confidentiality: None: There is no loss of confidentiality within the Subsequent System or all confidentiality impact is constrained to the Vulnerable System.
Subsequent system integrity: None: There is no loss of integrity within the Subsequent System or all integrity impact is constrained to the Vulnerable System.
Subsequent system availability: None: There is no impact to availability within the Subsequent System or all availability impact is constrained to the Vulnerable System.
Exploit Maturity: POC: Based on threat intelligence sources each of the following must apply: · Proof-of-concept is publicly available · No knowledge of reported attempts to exploit this vulnerability · No knowledge of publicly available solutions used to simplify attempts to exploit the vulnerability

Definitions: FIRST CVSS v4.0 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 15 Aug 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
mtons mblog	Affected =3.0 =3.1 =3.2 =3.3 =3.4 =3.5.0	Fixed in–

AI-suggested

European organizations should prioritize the following mitigations: 1) Immediate review and restriction of access to the /register endpoint, implementing network-level controls such as IP whitelisting or VPN access to limit exposure. 2) Implement robust error handling that avoids detailed error messages being returned to clients; configure the application and web server to log detailed errors internally while returning generic error responses externally. 3) Monitor web application logs for unusual activity targeting the /register endpoint to detect potential reconnaissance attempts. 5) Conduct security assessments and penetration tests focusing on error handling and information leakage vectors. 6) Educate development and operations teams about secure coding practices related to error management. These steps go beyond generic advice by focusing on access control, error message management, and proactive monitoring tailored to this specific vulnerability.

Description

A vulnerability was determined in mtons mblog up to 3.5.0. Affected is an unknown function of the file /register. The manipulation leads to information exposure through error message. It is possible to launch the attack remotely. The complexity of an attack is rather high. The exploitability is told to be difficult. The exploit has been disclosed to the public and may be used.

Impact

For European organizations using mtons mblog up to version 3.5.0, this vulnerability poses a risk of information leakage that could facilitate targeted attacks. The exposed information through error messages might help attackers map the application environment, identify backend technologies, or discover configuration weaknesses. While the direct impact is limited to information exposure, the disclosed data could be leveraged in social engineering, credential harvesting, or crafting more effective exploits. Organizations in sectors with strict data protection regulations, such as finance, healthcare, or government, may face compliance risks if sensitive internal details are leaked. Additionally, the remote nature of the attack vector means that any exposed mblog instance accessible over the internet is potentially vulnerable. However, the high attack complexity and lack of known active exploitation reduce the immediate threat level. Still, the presence of public exploit code increases the risk of opportunistic attacks, especially in less secure environments.

Summary

CVE-2025-9005 is a medium-severity vulnerability affecting mtons mblog versions up to 3.5.0. The flaw exists in an unspecified function within the /register endpoint of the application. This vulnerability allows an attacker to remotely trigger error messages that inadvertently expose sensitive information. The exposure occurs through error handling mechanisms that reveal internal details, which could include system paths, configuration data, or other diagnostic information useful for further attacks. The attack complexity is rated as high, indicating that exploitation requires significant effort or specific conditions. No authentication or user interaction is needed, and the vulnerability does not directly impact confidentiality, integrity, or availability beyond the information disclosure. The CVSS 4.0 vector (AV:N/AC:H/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P) confirms that the attack is network-based, requires high complexity, no privileges or user interaction, and results in low-impact information disclosure. Although the exploit has been publicly disclosed, there are no known active exploits in the wild at this time. The lack of patch links suggests that a fix may not yet be available or publicly documented. This vulnerability primarily aids attackers in reconnaissance rather than immediate system compromise but could be a stepping stone for more severe attacks if combined with other vulnerabilities.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 23 Aug 2025, 01:04 UTC

Technical details

References

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