CVE-2025-8927
Published: 13 August 2025
Summary
CVE-2025-8927 is a low-severity Improper Restriction of Excessive Authentication Attempts (CWE-307) vulnerability in Mtons Mblog. Its CVSS base score is 2.9 (Low).
Operationally, exploitation aligns with the MITRE ATT&CK technique Password Guessing (T1110.001); ranked in the top 45.7% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-24637
Vulnerability details
A vulnerability was determined in mtons mblog up to 3.5.0. Affected by this issue is some unknown functionality of the file /email/send_code of the component Verification Code Handler. The manipulation of the argument email leads to improper restriction of excessive…
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authentication attempts. The attack may be launched remotely. The complexity of an attack is rather high. The exploitation is known to be difficult. The exploit has been disclosed to the public and may be used.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
The lack of rate limiting on the /email/send_code endpoint enables brute force enumeration of valid user email addresses (T1087.003: Email Account) via excessive authentication attempts (T1110.001: Password Guessing), as explicitly mapped in advisories.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
This control directly enforces limits on consecutive invalid logon attempts and automatic response (e.g., lockout) to prevent brute-force exploitation of authentication mechanisms.
Specific conditions can include excessive failed attempts, triggering stronger authentication that restricts brute-force exploitation.
The control requires defining frequency, timing, and approval for security interactions, directly addressing uncontrolled interaction rates.
Allocation policies inherently restrict interaction frequency, reducing the impact of excessive requests.
Spam protection explicitly controls interaction frequency by detecting and acting on bulk unsolicited messages from external sources.