Authenticated code execution via unbounded QoS rule name
Published Jul 6, 2023 · Updated Nov 4, 2025
Stack-based buffer overflow in Milesight UR32L 32.3.0.5 allows remote authenticated users to execute code via a crafted HTTP request. The set_qos function passes the rule_name JSON value to sprintf for an unbounded write into a fixed vtysh_command_buffer. A high-privilege web account is required; the published proof of concept crashes vtysh_ubus, while Talos reports arbitrary code execution.
Summary
What happened
Stack-based buffer overflow in Milesight UR32L 32.3.0.5 allows remote authenticated users to execute code via a crafted HTTP request. The set_qos function passes the rule_name JSON value to sprintf for an unbounded write into a fixed vtysh_command_buffer. A high-privilege web account is required; the published proof of concept crashes vtysh_ubus, while Talos reports arbitrary code execution.
The record
- CVE
- CVE-2023-25096
- Published
- Jul 6, 2023
- Updated
- Nov 4, 2025
- Vendor
- Milesight
- Product
- UR32L
- Classifications
- CWE-121, T1190
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Jul 6, 2023CVE publishedPublication date reported by the CVE source.
- Nov 4, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=v32.3.0.5
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- set_qos rule_name crash proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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