Null Pointer Dereference vulnerability exists in TRENDnet TEW-755AP 1.11B03…
Priority LOW 35CWE-476Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-476.
Summary
Null Pointer Dereference vulnerability exists in TRENDnet TEW-755AP 1.11B03, TEW-755AP2KAC 1.11B03, TEW-821DAP2KAC 1.11B03, and TEW-825DAP 1.11B03 by sending the POST request to apply_cgi via a do_graph_auth action without a session_id key.
Why it matters now
EPSS 0.00961 61st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:trendnet:tew-755ap_firmware:1.11b03:*:*:*:*:*:*:* | 1.11b03 | Vulnerable | TRENDnet |
| cpe:2.3:h:trendnet:tew-755ap:-:*:*:*:*:*:*:* | not specified by NVD | Running on | TRENDnet |
| cpe:2.3:o:trendnet:tew-755ap2kac_firmware:1.11b03:*:*:*:*:*:*:* | 1.11b03 | Vulnerable | TRENDnet |
| cpe:2.3:h:trendnet:tew-755ap2kac:-:*:*:*:*:*:*:* | not specified by NVD | Running on | TRENDnet |
| cpe:2.3:o:trendnet:tew-821dap2kac_firmware:1.11b03:*:*:*:*:*:*:* | 1.11b03 | Vulnerable | TRENDnet |
| cpe:2.3:h:trendnet:tew-821dap2kac:-:*:*:*:*:*:*:* | not specified by NVD | Running on | TRENDnet |
| cpe:2.3:o:trendnet:tew-825dap_firmware:1.11b03:*:*:*:*:*:*:* | 1.11b03 | Vulnerable | TRENDnet |
| cpe:2.3:h:trendnet:tew-825dap:-:*:*:*:*:*:*:* | not specified by NVD | Running on | TRENDnet |
- cpe:2.3:o:trendnet:tew-755ap_firmware:1.11b03:*:*:*:*:*:*:* Versions 1.11b03 Vulnerable ·TRENDnet
- cpe:2.3:h:trendnet:tew-755ap:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·TRENDnet
- cpe:2.3:o:trendnet:tew-755ap2kac_firmware:1.11b03:*:*:*:*:*:*:* Versions 1.11b03 Vulnerable ·TRENDnet
- cpe:2.3:h:trendnet:tew-755ap2kac:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·TRENDnet
- cpe:2.3:o:trendnet:tew-821dap2kac_firmware:1.11b03:*:*:*:*:*:*:* Versions 1.11b03 Vulnerable ·TRENDnet
- cpe:2.3:h:trendnet:tew-821dap2kac:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·TRENDnet
- cpe:2.3:o:trendnet:tew-825dap_firmware:1.11b03:*:*:*:*:*:*:* Versions 1.11b03 Vulnerable ·TRENDnet
- cpe:2.3:h:trendnet:tew-825dap:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·TRENDnet
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-28844
- 2026-10-03 Alias added: GHSA-fv7c-vwwc-7p9f
References
More TRENDnet Tew-755ap2kac Firmware vulnerabilities
- TI-2021-09834 Null Pointer Dereference vulnerability exists in TRENDnet TEW-755AP 1.11B03… CVSS 3.1HIGH 7.5
- TI-2021-09832 Null Pointer Dereference vulnerability exists in TRENDnet TEW-755AP 1.11B03… CVSS 3.1HIGH 7.5
- TI-2021-09831 Null Pointer Deference vulnerability exists in TRENDnet TEW-755AP 1.11B03, TEW-755AP2KAC… CVSS 3.1HIGH 7.5
- TI-2021-09830 Null Pointer Dereference vulnerability in TRENDnet TEW-755AP 1.11B03, TEW-755AP2KAC… CVSS 3.1HIGH 7.5
- TI-2021-09835 A Format String vulnerablity exists in TRENDnet TEW-755AP 1.11B03, TEW-755AP2KAC 1.11B03… CVSS 3.1MEDIUM 6.5
Sources
- CVE-2021-28844 · CVE Program
- CVE-2021-28844 · NVD
- FIRST EPSS
- GHSA-fv7c-vwwc-7p9f · GitHub Advisory Database · CC BY 4.0
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