CVE-2023-2587Public exploitNetwork attack vector

Managed-device code execution via stored firmware-field XSS

Published May 22, 2023 · Updated Jan 16, 2025

Stored XSS in the main page of Teltonika Networks Remote Management System before 4.10.0 allows remote attackers to execute code on managed devices. The DEVICE FIRMWARE view renders the device-supplied fw_version value from a crafted JSON message as an HTML object without neutralizing active content. Exploitation requires a registered device's MAC address and serial number plus an administrator hovering over the injected object; the resulting account-context script execution can reach managed devices.

CVSS severity7.5
High
EPSS probability0.92%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in the main page of Teltonika Networks Remote Management System before 4.10.0 allows remote attackers to execute code on managed devices. The DEVICE FIRMWARE view renders the device-supplied fw_version value from a crafted JSON message as an HTML object without neutralizing active content. Exploitation requires a registered device's MAC address and serial number plus an administrator hovering over the injected object; the resulting account-context script execution can reach managed devices.

The record

CVE
CVE-2023-2587
Published
May 22, 2023
Updated
Jan 16, 2025
Vendor
Teltonika Networks
Product
Remote Management System (RMS)
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 22, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 16, 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=0 <4.10.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Teltonika Networks · Remote Management System (RMS)version=0 <4.10.0

Published CVSS scores

7.5ICS-CERTCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
8.3NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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')
T1203Exploitation for Client Execution

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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