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CVE-2021-20596

CVE.org · Published

Historical CVEsJSONAI instructions

Record status
Published
Identifier year (not publication year)
2021
Source publication
Source updated
Imported by cveboard
Source snapshot
cve_2026-10-24_midnight_baseline ·

Plain text

CNA source text (English)

NULL Pointer Dereference in MELSEC-F Series FX3U-ENET firmware version 1.14 and prior, FX3U-ENET-L firmware version 1.14 and prior and FX3U-ENET-P502 firmware version 1.14 and prior allows a remote unauthenticated attacker to cause a DoS condition in communication by sending specially crafted packets. Control by MELSEC-F series PLC is not affected and system reset is required for recovery.

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.

MELSEC-F Series FX3U-ENET; FX3U-ENET-L; FX3U-ENET-P502

Vendor
n/a
Product
MELSEC-F Series FX3U-ENET; FX3U-ENET-L; FX3U-ENET-P502
Platforms
Unknown
Default status
Unknown
MELSEC-F Series FX3U-ENET; FX3U-ENET-L; FX3U-ENET-P502 · Scoped product and version facts
Version (version)Status (status)Version scheme (versionType)Exclusive end (lessThan)Inclusive end (lessThanOrEqual)Status changes (at → status)
Firmware version 1.14 and prioraffectedUnavailableUnavailableUnavailableNone listed