CVE-2025-1731

Published Apr 22, 2025 CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Description
An incorrect permission assignment vulnerability in the PostgreSQL commands of the Zyxel USG FLEX H series uOS firmware versions from V1.20 through V1.31 could allow an authenticated local attacker with low privileges to gain access to the Linux shell and escalate their privileges by crafting malicious scripts or modifying system configurations with administrator-level access through a stolen token. Modifying the system configuration is only possible if the administrator has not logged out and the token remains valid.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-12140 An incorrect permission assignment vulnerability in the PostgreSQL commands of the Zyxel USG FLEX H series uOS firmware versions from V1.20 through V1.31 could allow an authenticated local attacker with low privileges to gain access to the Linux shell and escalate their privileges by crafting malicious scripts or modifying system configurations with administrator-level access through a stolen token. Modifying the system configuration is only possible if the administrator has not logged out and the token remains valid.
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Zyxel
Zyxel uos
Zyxel usg Flex 100h
Zyxel usg Flex 100hp
Zyxel usg Flex 200h
Zyxel usg Flex 200hp
Zyxel usg Flex 500h
Zyxel usg Flex 50h
Zyxel usg Flex 50hp
Zyxel usg Flex 700h
CPEs cpe:2.3:h:zyxel:usg_flex_100h:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_100hp:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_200h:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_200hp:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_500h:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_50h:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_50hp:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_700h:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:uos:*:*:*:*:*:*:*:*
Vendors & Products Zyxel
Zyxel uos
Zyxel usg Flex 100h
Zyxel usg Flex 100hp
Zyxel usg Flex 200h
Zyxel usg Flex 200hp
Zyxel usg Flex 500h
Zyxel usg Flex 50h
Zyxel usg Flex 50hp
Zyxel usg Flex 700h
Type Values Removed Values Added
Description An incorrect permission assignment vulnerability in the PostgreSQL commands of the USG FLEX H series uOS firmware versions from V1.20 through V1.31 could allow an authenticated local attacker with low privileges to gain access to the Linux shell and escalate their privileges by crafting malicious scripts or modifying system configurations with administrator-level access through a stolen token. Modifying the system configuration is only possible if the administrator has not logged out and the token remains valid. An incorrect permission assignment vulnerability in the PostgreSQL commands of the Zyxel USG FLEX H series uOS firmware versions from V1.20 through V1.31 could allow an authenticated local attacker with low privileges to gain access to the Linux shell and escalate their privileges by crafting malicious scripts or modifying system configurations with administrator-level access through a stolen token. Modifying the system configuration is only possible if the administrator has not logged out and the token remains valid.
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description An incorrect permission assignment vulnerability in the PostgreSQL commands of the USG FLEX H series uOS firmware versions from V1.20 through V1.31 could allow an authenticated local attacker with low privileges to gain access to the Linux shell and escalate their privileges by crafting malicious scripts or modifying system configurations with administrator-level access through a stolen token. Modifying the system configuration is only possible if the administrator has not logged out and the token remains valid.
Weaknesses CWE-732
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}