Security readout for executives and security teams
Plain-English summary
CVE-2023-0782 affects Tenda AC23 routers running firmware 16.03.07.45. A flaw in the router web service can cause memory corruption through DDNS-related handling. Sources rate it high to critical because a remote attacker with required permissions could affect confidentiality, integrity, and availability.
Executive priority
Treat this as high priority for edge-network inventories. The affected device is a router, the impact can be severe, and public exploit material exists. Prioritize confirmation of exposure and management-plane isolation while checking vendor remediation guidance.
Technical view
The issue is a CWE-787 out-of-bounds write in /bin/httpd, involving formSetSysToolDDNS/formGetSysToolDDNS. The listed CVSS v2 vector is AV:N/AC:L/Au:M/C:C/I:C/A:C, indicating network reachability, low attack complexity, required authentication or permissions, and full impact if exploited.
Likely exposure
Exposure is limited to Tenda AC23 devices on firmware 16.03.07.45, especially where the web management service is reachable from untrusted networks. The source bundle does not identify other models, firmware versions, or cloud-managed products as affected.
Exploitation context
The vulnerability entry says an exploit has been publicly disclosed and may be used, with a GitHub reference tagged as exploit. CISA KEV status is false in the source bundle, and no cited source confirms active exploitation in the wild.
Researcher notes
Evidence supports a remotely reachable, permission-required out-of-bounds write in Tenda AC23 16.03.07.45 httpd DDNS handlers. The sources do not provide a confirmed vendor patch, active exploitation evidence, or broader affected-version list.
Mitigation direction
- Identify Tenda AC23 devices and confirm firmware version 16.03.07.45.
- Check Tenda guidance for fixed firmware or replacement direction.
- Restrict router management access to trusted admin networks only.
- Disable internet exposure of the web management interface.
- Monitor for unexpected DDNS changes or httpd instability.
Validation and detection
- Inventory external and internal assets for Tenda AC23 routers.
- Verify firmware versions through approved administrative interfaces.
- Confirm management UI is not reachable from the public internet.
- Review available logs for suspicious DDNS configuration activity.
- Track CVE, VulDB, and vendor pages for updated remediation guidance.
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-2023-0782 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
- 8.3 (2.0)
- Known Exploited
- No
- Published
Vector: AV:N/AC:L/Au:M/C:C/I:C/A:C
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.
AV:N/AC:L/Au:M/C:C/I:C/A:C6.410Primary CVE scoreVulnerability scoring details
Base CVSS 2.0 score
8.3HighVector: AV:N/AC:L/Au:M/C:C/I:C/A:C
Source materials
- CVE List V5 sourceCVE List V5
- https://vuldb.com/?id.220640CVE reference · vdb-entry, technical-description
- https://vuldb.com/?ctiid.220640CVE reference · signature, permissions-required
- https://github.com/jingping911/tendaAC23overflow/blob/main/README.mdCVE reference · exploit
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.