Security readout for executives and security teams
Plain-English summary
CVE-2025-67445 is an availability flaw in the TOTOLINK X5000R web management CGI. A large POST request can exhaust memory or crash the CGI, making the router’s web interface unavailable. It is not described as data theft or device takeover.
Executive priority
Treat as a moderate availability risk. Prioritize routers whose management interfaces are reachable beyond trusted administrators, because successful triggering can disrupt device administration even though confidentiality and integrity impact are not reported.
Technical view
The CGI at /cgi-bin/cstecgi.cgi reads CONTENT_LENGTH and allocates malloc(CONTENT_LENGTH + 1) without sufficient bounds checking. If lighttpd request-size limits are not enforced, oversized POST data can trigger memory exhaustion or segmentation fault. CVSS 3.1 is 6.5, AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Likely exposure
Exposure appears limited to TOTOLINK X5000R firmware V9.1.0cu.2415_B20250515 where the management web interface is reachable from adjacent or administrative networks. The source bundle’s affected-product metadata is incomplete, so confirm inventory against vendor guidance.
Exploitation context
No CISA KEV listing or cited source indicates active exploitation. Public details describe the vulnerable component and denial-of-service condition, but the provided evidence does not establish broad in-the-wild exploitation.
Researcher notes
This is CWE-400 uncontrolled resource consumption. The critical condition is unbounded allocation from CONTENT_LENGTH when lighttpd’s request limit is ineffective. Affected metadata in the bundle is sparse, and no vendor patch information is included.
Mitigation direction
- Check TOTOLINK guidance for fixed firmware or official mitigation.
- Restrict management web access to trusted administrative networks only.
- Confirm request-size limits are enforced where configurable.
- Monitor devices for web management crashes or repeated restart symptoms.
- Avoid exposing the management interface to untrusted networks.
Validation and detection
- Inventory TOTOLINK X5000R devices and firmware versions.
- Confirm whether V9.1.0cu.2415_B20250515 is deployed.
- Review management interface reachability from adjacent networks.
- Check configuration for enforced web request-size limits.
- Review logs or uptime data for CGI crash symptoms.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-400: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2025-67445 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H2.83.6CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/DaRkSpOoOk/CVE-2025-67445CVE reference, mitre
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Uncontrolled Resource Consumption
Uncontrolled Resource Consumption represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.