CVE-2023-25110Public exploitNetwork attack vector

Authenticated code execution via unbounded GRE address formatting

Published Jul 6, 2023 · Updated Nov 4, 2025

Stack-based buffer overflow in Milesight UR32L v32.3.0.5 allows remote authenticated users to execute arbitrary code via a crafted HTTP request. The vpn_gre_handler_set path passes the remote_virtual_ip JSON string to set_gre, where sprintf writes it into vtysh_command_buffer without a length bound. High-privileged web access is required; the published proof of concept crashes vtysh_ubus, while the CNA records arbitrary code execution.

CVSS severity7.2
High
EPSS probability1.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in Milesight UR32L v32.3.0.5 allows remote authenticated users to execute arbitrary code via a crafted HTTP request. The vpn_gre_handler_set path passes the remote_virtual_ip JSON string to set_gre, where sprintf writes it into vtysh_command_buffer without a length bound. High-privileged web access is required; the published proof of concept crashes vtysh_ubus, while the CNA records arbitrary code execution.

The record

CVE
CVE-2023-25110
Published
Jul 6, 2023
Updated
Nov 4, 2025
Vendor
Milesight
Product
UR32L
Classifications
CWE-121
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jul 6, 2023CVE publishedPublication date reported by the CVE source.
  2. 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.

  1. Affected versionversion=v32.3.0.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Milesight · UR32Lversion=v32.3.0.5

Published CVSS scores

7.2Cisco TalosCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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