Security readout for executives and security teams
Plain-English summary
This issue affects Tenda AC23 firmware V16.03.07.45_cn, where a firewall configuration parameter can overflow memory. The CVSS record rates it as remotely reachable without login or user interaction, so exposed devices could face severe compromise risk. The provided sources do not identify a vendor patch.
Executive priority
Prioritize remediation for any exposed Tenda AC23 devices because the CVSS score indicates unauthenticated remote compromise potential. The business urgency is highest for internet-facing or unmanaged branch devices, but evidence of active exploitation was not provided.
Technical view
CVE-2022-43108 describes a stack overflow, mapped to CWE-787, in formSetFirewallCfg via the firewallEn parameter. CVSS 3.1 is 9.8 with network attack vector, low complexity, no privileges, no user interaction, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most likely where Tenda AC23 devices running V16.03.07.45_cn are deployed and their management or firewall configuration surface is reachable. The CVE metadata’s formal affected vendor/product fields are incomplete, so asset validation should rely on device model and firmware version evidence.
Exploitation context
The provided sources support critical remote risk but do not show active exploitation. The record is not listed as KEV in the supplied bundle. Treat internet-exposed management interfaces as higher urgency, while avoiding claims about exploitation not supported by the sources.
Researcher notes
The strongest source detail is the function and parameter named in the CVE and GitHub reference. The affected metadata is sparse, and no patch information is included. Avoid broadening scope beyond Tenda AC23 V16.03.07.45_cn without independent vendor confirmation.
Mitigation direction
- Identify Tenda AC23 devices and confirm firmware version V16.03.07.45_cn.
- Check Tenda or reseller guidance for fixed firmware or official mitigation.
- Restrict access to device administration interfaces from untrusted networks.
- Place management access behind VPN or trusted administrative networks.
- Retire or replace devices if no supported remediation is available.
Validation and detection
- Inventory routers by model, firmware version, and administrative exposure.
- Verify whether any AC23 device runs V16.03.07.45_cn.
- Confirm management interfaces are not internet-accessible.
- Review perimeter rules for unintended access to router administration services.
- Track vendor advisories for corrected firmware or mitigation guidance.
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-2022-43108 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
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.