Security readout for executives and security teams
Plain-English summary
CVE-2025-51087 is a high-severity memory safety flaw reported in Tenda AC8V4 firmware V16.03.34.06. A network attacker may trigger a stack overflow through a parental-control save function. The sources do not name a vendor patch or confirm active exploitation.
Executive priority
Treat this as a near-term perimeter device risk. Prioritize internet-facing or remotely administered Tenda AC8V4 routers first, because the CVSS vector indicates unauthenticated network reachability and no user interaction.
Technical view
The CVE describes a CWE-121 stack-based buffer overflow at /goform/saveParentControlInfo caused by handling of the time argument. CVSS 3.1 is 8.6 with network attack vector, low complexity, no privileges, and no user interaction. Official affected CPE/product metadata is not populated.
Likely exposure
Exposure is most likely where Tenda AC8V4 devices run firmware V16.03.34.06, especially if the web management interface is reachable from untrusted networks. Because the CVE record lists affected vendor/product as n/a, confirm by device inventory and firmware checks.
Exploitation context
The provided bundle says KEV is false and cites no evidence of in-the-wild exploitation. A public researcher write-up is referenced, so defenders should assume technical details may be publicly accessible, while avoiding claims of active exploitation.
Researcher notes
Evidence is limited to the CVE record and a referenced public GitHub report. The CVE identifies the endpoint and parameter class but has incomplete affected-product metadata and no sourced patch information in the provided bundle.
Mitigation direction
- Check Tenda guidance for fixed firmware or official mitigation.
- Update affected devices if vendor-fixed firmware is available.
- Restrict router management interfaces to trusted administrative networks.
- Disable remote administration from the internet where possible.
- Replace unsupported devices if no vendor remediation exists.
- Monitor for unexpected device crashes or configuration changes.
Validation and detection
- Inventory Tenda AC8V4 devices and record firmware versions.
- Confirm whether V16.03.34.06 is present in production.
- Verify management interfaces are not exposed to untrusted networks.
- Review vendor advisories for patch status before closure.
- Check security monitoring for abnormal router resets or admin changes.
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-121: 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-2025-51087 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
- High
- CVSS
- 8.6 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
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:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L3.94.7CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
8.6HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
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/TL-SN/IOT/blob/main/Tenda/Tenda-AC8v4%20%20V16.03.34.06/CVE-2025-51087.mdCVE 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.
Stack-based Buffer Overflow
Stack-based Buffer Overflow represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.