CVE-2025-6824
Published: 28 June 2025
Summary
CVE-2025-6824 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Totolink X15 Firmware. Its CVSS base score is 7.4 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 19.4% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
A critical buffer overflow vulnerability, tracked as CVE-2025-6824 and also associated with CWE-119 and CWE-120, affects the TOTOLINK X15 router firmware up to version 1.0.0-B20230714.1105. The flaw resides in an unknown function within the file /boafrm/formParentControl of the HTTP POST Request Handler component, where improper handling of the submit-url argument allows memory corruption.
An authenticated remote attacker can send a crafted HTTP POST request to trigger the overflow, potentially achieving arbitrary code execution, privilege escalation, or full device compromise. Public proof-of-concept exploit code has been disclosed, and the issue carries a CVSS 4.0 score of 7.4 with the E:P metric indicating availability of working exploits.
The associated EPSS score remains low at 0.0136 with a peak of only 0.0137, showing no material increase after disclosure. Available references consist primarily of public disclosure and PoC repositories rather than vendor advisories or patch guidance.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-19456
Vulnerability details
A vulnerability classified as critical has been found in TOTOLINK X15 up to 1.0.0-B20230714.1105. Affected is an unknown function of the file /boafrm/formParentControl of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer overflow.…
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It is possible to launch the attack remotely. 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 buffer overflow vulnerability in the TOTOLINK X15 router's HTTP POST request handler (/boafrm/formParentControl) via the 'submit-url' argument enables remote exploitation of a public-facing web application.
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.
Managed runtimes used by platform-independent applications (e.g., JVM, CLR) enforce memory safety, preventing most buffer overflows that require direct memory manipulation.
Ongoing control assessments and code testing (static/dynamic analysis, fuzzing) surface memory buffer restriction failures, which are then remediated before release.
Memory protections (e.g., W^X, ASLR) make exploitation of buffer-boundary violations far harder to turn into code execution.
Detects exploitation attempts that produce memory corruption, crashes, or anomalous behavior.