CVE intelligence and bounded remediation
CVE-2022-26987 — Tp-Link Tl-Wdr7660 Firmware security vulnerability
High
CVSS 7.8
TP-Link TL-WDR7660 2.0.30, Mercury D196G 20200109_2.0.4, and Fast FAC1900R 20190827_2.0.2 routers have a stack overflow issue in `MmtAtePrase` function. Local users could get remote code execution.
- Severity
- High
- CVSS
- 7.8 (3.1)
- Published
- 2022-05-10
- CISA KEV
- Not currently listed
- Ecosystem
- operating-system
- Weaknesses
- CWE-787
Affected products
- tp-link / tl-wdr7660_firmware / 2.0.30
- tp-link / tl-wdr7661_firmware
- tp-link / tl-wdr7620_firmware
- tp-link / tl-wdr5660_firmware
- mercusys / mercury_d196g_firmware / 20200109_2.0.4
- fastcom / fac1900r_firmware / 20190827_2.0.2
Matched remediation archetype
Buffer bounds, memory safety, and memory corruption
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Check exposure
- Identify affected native-code versions, build flags, architectures, parsers, codecs, drivers, and input paths in all shipped artifacts.
- Determine whether untrusted data reaches the affected routine and the process privilege, sandbox, and network exposure.
- Confirm statically linked, vendored, firmware, and platform-provided copies, not only package-manager records.
Remediate safely
- Apply the maintained upstream correction or replace the affected component, then rebuild every dependent artifact from clean inputs.
- Adopt bounds-checked interfaces, validated sizes and integer conversions, clear ownership, and memory-safe components where practical.
- Enable supported compiler and runtime hardening and add sanitized tests and fuzz regression seeds derived from non-weaponized fixtures.
Authoritative sources
Complete CVE record and remediation plan
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