CVE-2023-43260Public exploitNetwork attack vector

Session hijacking via reflected CGI path injection

Published Oct 5, 2023 · Updated Sep 19, 2024

Reflected XSS in Milesight router firmware before 35.3.0.7 allows remote attackers to execute scripts through a crafted admin-panel URL. The CGI handler echoes arbitrary text placed after /cgi-bin/ into an HTML response without output encoding, so script markup executes in the viewing browser. A user must open the crafted URL; script execution can read the unprotected session cookie and act through the user's administrative session.

CVSS severity6.1
Medium
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in Milesight router firmware before 35.3.0.7 allows remote attackers to execute scripts through a crafted admin-panel URL. The CGI handler echoes arbitrary text placed after /cgi-bin/ into an HTML response without output encoding, so script markup executes in the viewing browser. A user must open the crafted URL; script execution can read the unprotected session cookie and act through the user's administrative session.

The record

CVE
CVE-2023-43260
Published
Oct 5, 2023
Updated
Sep 19, 2024
Vendor
Milesight
Product
UR35 Firmware
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 5, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 19, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <35.3.0.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Milesight · UR35 Firmwareversion=0 <35.3.0.7
Milesight · UR41 Firmwareversion=0 <35.3.0.7
Milesight · UR32L Firmwareversion=0 <35.3.0.7
Milesight · UR32 Firmwareversion=0 <35.3.0.7
Milesight · UR5x Firmwareversion=0 <35.3.0.7

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

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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