Security readout for executives and security teams
Plain-English summary
This is a critical memory-safety flaw reported in Tenda i21 firmware V1.0.0.14(4656). A network attacker may be able to compromise confidentiality, integrity, and availability without authentication, based on CVSS. Organizations using this device should treat exposed management access as urgent until vendor guidance or updated firmware is confirmed.
Executive priority
Prioritize remediation for any exposed Tenda i21 device. The vulnerability is critical, unauthenticated, network-reachable, and potentially device-compromising. If the product is unsupported or no fix is available, isolation or replacement should be considered a near-term risk-reduction action.
Technical view
CVE-2022-44362 is reported as a CWE-787 buffer overflow in the /goform/AddSysLogRule handler on Tenda i21 V1.0.0.14(4656). The CVSS 3.1 score is 9.8, with network attack vector, low complexity, no privileges, no user interaction, and high C/I/A impact.
Likely exposure
Likely exposure is limited to environments running the specified Tenda i21 firmware version. Risk increases sharply if the device management interface is reachable from untrusted networks. The provided CVE data does not include CPEs, broader affected versions, or an official vendor advisory.
Exploitation context
The provided data does not show CISA KEV listing or confirm active exploitation. A public GitHub reference is listed, but the source bundle does not provide enough detail to assess exploit maturity safely. Treat the issue as high priority because unauthenticated network exploitation is reflected in CVSS.
Researcher notes
Evidence is sparse: the CVE record names the endpoint, version, CWE-787, and CVSS vector, but does not include CPEs, vendor confirmation, fix status, or exploitation telemetry. Avoid assuming impact beyond Tenda i21 V1.0.0.14(4656) without additional vendor evidence.
Mitigation direction
- Check Tenda guidance and current firmware availability for i21 devices.
- Remove management interfaces from internet or untrusted network access.
- Restrict device administration to trusted management networks or VPN only.
- Replace unsupported affected devices if no vendor fix is available.
- Monitor device logs for unexpected configuration or stability events.
Validation and detection
- Inventory Tenda i21 devices and record firmware versions.
- Identify any device running V1.0.0.14(4656).
- Confirm management interface exposure from internal and external networks.
- Check whether /goform/AddSysLogRule is present on affected firmware.
- Review vendor or reseller sources for updated firmware or advisories.
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-2022-44362 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.