CVE-2025-5792
Published: 06 June 2025
Summary
CVE-2025-5792 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Totolink Ex1200T 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 19.0% 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 exists in the TOTOLINK EX1200T wireless extender running firmware 4.1.2cu.5232_B20210713. The flaw resides in the HTTP POST Request Handler component, specifically within the /boafrm/formWlanRedirect endpoint, where unsanitized input to the redirect-url parameter can trigger memory corruption. The issue is tracked under CWE-119 and CWE-120 and carries a CVSS 4.0 score of 7.4.
An authenticated remote attacker can send a crafted HTTP POST request to overflow the buffer, potentially leading to arbitrary code execution or denial of service with high impact on confidentiality, integrity, and availability. The attack requires no user interaction and can be launched over the network; a public proof-of-concept exploit has already been published.
The EPSS score remains low at approximately 0.0142 with negligible change from its recorded peak. No vendor advisory or firmware update addressing the flaw is referenced in the available sources, and the manufacturer’s site provides no mitigation guidance at this time.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-17348
Vulnerability details
A vulnerability, which was classified as critical, has been found in TOTOLINK EX1200T 4.1.2cu.5232_B20210713. This issue affects some unknown processing of the file /boafrm/formWlanRedirect of the component HTTP POST Request Handler. The manipulation of the argument redirect-url leads to buffer…
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overflow. The attack may be initiated 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?
Buffer overflow in public-facing router web interface (/boafrm/formWlanRedirect) via remote HTTP POST enables exploitation of public-facing application (T1190) and application/system exploitation for denial of service (T1499.004).
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.