CVE-2023-28771

Improper error message handling in Zyxel ZyWALL/USG series firmware versions 4.60 through 4.73, VPN series firmware versions 4.60 through 5.35, USG FLEX series firmware versions 4.60 through 5.35, and ATP series firmware versions 4.60 through 5.35, which could allow an unauthenticated attacker to execute some OS commands remotely by sending crafted packets to an affected device.
OS Command Injection
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
ZyxelCNA
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVEADP
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CISA-ADPADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 99%
VendorProductVersion
zyxelatp100_firmware
4.60 ≤
𝑥
< 5.36
zyxelatp100w_firmware
4.60 ≤
𝑥
< 5.35
zyxelatp200_firmware
4.60 ≤
𝑥
< 5.36
zyxelatp500_firmware
4.60 ≤
𝑥
< 5.36
zyxelatp700_firmware
4.60 ≤
𝑥
< 5.36
zyxelatp800_firmware
4.60 ≤
𝑥
< 5.36
zyxelusg_flex_100_firmware
4.60 ≤
𝑥
< 5.36
zyxelusg_flex_100w_firmware
4.60 ≤
𝑥
< 5.36
zyxelusg_flex_200_firmware
4.60 ≤
𝑥
< 5.36
zyxelusg_flex_50_firmware
4.60 ≤
𝑥
< 5.36
zyxelusg_flex_500_firmware
4.60 ≤
𝑥
< 5.36
zyxelusg_flex_50w_firmware
4.60 ≤
𝑥
< 5.36
zyxelusg_flex_700_firmware
4.60 ≤
𝑥
< 5.36
zyxelvpn100_firmware
4.60 ≤
𝑥
< 5.36
zyxelvpn1000_firmware
4.60 ≤
𝑥
< 5.36
zyxelvpn300_firmware
4.60 ≤
𝑥
< 5.36
zyxelvpn50_firmware
4.60 ≤
𝑥
< 5.36
zyxelzywall_usg_310_firmware
4.60 ≤
𝑥
< 4.73
zyxelzywall_usg_310_firmware
4.73
zyxelzywall_usg_100_firmware
4.60 ≤
𝑥
< 4.73
zyxelzywall_usg_100_firmware
4.73
𝑥
= Vulnerable software versions