CVE-2026-7422
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
MAC Address Validation Bypass in FreeRTOS-Plus-TCP IPv4 and IPv6 Packet Processing
Insufficient packet validation in FreeRTOS-Plus-TCP before V4.2.6 and V4.4.1 allows an adjacent network actor to bypass all checksum and minimum-size validation by spoofing the Ethernet source MAC address to match one of the device's own registered endpoints, because the loopback detection mechanism skips all input validation for packets whose source MAC matches a local endpoint. To mitigate this issue, users should upgrade to the fixed version when available.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
FreeRTOS-Plus-TCP
- Vendor
- AWS
- Product
- FreeRTOS-Plus-TCP
- Platforms
- Unknown
- Default status
unaffected- Package collection
- https://github.com/FreeRTOS/FreeRTOS-Plus-TCP
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 4.0.0 | affected | semver | 4.2.6 | Unavailable | None listed |
| 4.3.0 | affected | semver | 4.4.1 | Unavailable | None listed |
| 4.2.6 | unaffected | Unavailable | Unavailable | Unavailable | None listed |
| 4.4.1 | unaffected | Unavailable | Unavailable | Unavailable | None listed |