An issue was discovered in function httpProcDataSrv in TL-WDR7660 2.0.30 that allows…
Priority HIGH 70CWE-94Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-94.
Summary
An issue was discovered in function httpProcDataSrv in TL-WDR7660 2.0.30 that allows attackers to execute arbitrary code.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00896 59th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
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
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-37774
- 2026-10-03 Alias added: GHSA-72gc-x9q7-vh7v
References
Exploit 1
More TP-Link Tl-wdr7660 Firmware vulnerabilities
- TI-2023-24962 TP-Link device TL-WDR7660 2.0.30 and TL-WR886N 2.0.12 has a stack overflow vulnerability… CVSS 3.1CRITICAL 9.8
- TI-2024-32477 In TP-Link TL-WDR7660 v1.0, the guestRuleJsonToBin function handles the parameter string… CVSS 3.1MEDIUM 6.5
- TI-2024-32476 In TP-Link TL-WDR7660 1.0, the wacWhitelistJsonToBin function handles the parameter… CVSS 3.1MEDIUM 6.5
- TI-2024-32475 In TP-Link TL-WDR7660 1.0, the rtRuleJsonToBin function handles the parameter string name… CVSS 3.1MEDIUM 6.5
- TI-2024-32474 In TP-Link TL-WDR7660 1.0, the wlanTimerRuleJsonToBin function handles the parameter… CVSS 3.1MEDIUM 6.5
- TI-2023-24963 TP-Link TL-WDR7660 2.0.30 has a stack overflow vulnerability via the function deviceInfoJsonToBincauses. CVSS 3.1CRITICAL 9.8
Sources
- CVE-2021-37774 · CVE Program
- CVE-2021-37774 · NVD
- FIRST EPSS
- GHSA-72gc-x9q7-vh7v · GitHub Advisory Database · CC BY 4.0
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