Security readout for executives and security teams
Plain-English summary
This CVE describes a critical memory-safety flaw in Tenda AC15 router firmware V15.03.05.19. A network-reachable request to a named router setting path can trigger a stack overflow through the listed parameter, with CVSS indicating full confidentiality, integrity, and availability impact.
Executive priority
Prioritize remediation for any affected router that protects business networks or remote sites. The score and unauthenticated network vector make this urgent, but evidence of active exploitation is not provided in the supplied sources.
Technical view
CVE-2022-40853 is reported as CWE-787 affecting Tenda AC15 V15.03.05.19 through the list parameter at /goform/fast_setting_wifi_set. The CVSS 3.1 vector is AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, indicating unauthenticated network reachability and severe impact if exploitable.
Likely exposure
Exposure is most likely where Tenda AC15 routers running V15.03.05.19 are deployed, especially if their web management surface is reachable from untrusted networks. The provided affected-product metadata is incomplete, so confirm against actual device model and firmware inventory.
Exploitation context
The source bundle does not show CISA KEV listing or any cited confirmation of active exploitation. The public reference names the affected endpoint and parameter, which increases research visibility, but the bundle does not establish real-world exploitation.
Researcher notes
The public record is narrow: model, firmware version, endpoint, parameter, CWE, and CVSS are available, while official affected CPEs and vendor fix details are not included. Avoid broad product assumptions beyond Tenda AC15 V15.03.05.19.
Mitigation direction
- Identify any Tenda AC15 routers and record firmware versions.
- Check Tenda or device-provider guidance for fixed firmware or replacement advice.
- Remove management access from untrusted networks where operationally possible.
- Apply compensating network controls until vendor guidance is confirmed.
- Replace unsupported or unpatchable affected devices.
Validation and detection
- Confirm whether any device is Tenda AC15 running V15.03.05.19.
- Verify management interfaces are not exposed to the internet.
- Review vendor firmware notes for CVE-2022-40853 coverage.
- Check monitoring for unexpected router crashes or configuration changes.
- Document affected assets, controls, and remediation owner.
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-787: 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-2022-40853 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
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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.
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:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/CPSeek/Router-vuls/blob/main/Tenda/AC15/form_fast_setting_wifi_set.mdCVE reference · x_refsource_MISC
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.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.