CVE-2021-20596

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…

published July 22, 2021

CVSS
—
EPSS
2%
Percentile
82.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.02172 · 82.2th percentile
Published
2021-07-22T11:02Z
EPSS history
Timeline
  • 22 JUL 11:02Z
    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…
    cvelistv5