CVE-2022-39996Public exploit

Script execution via unneutralized cmdcookie input

Published Aug 27, 2024 · Updated Aug 28, 2024

Cross-site scripting in Teldat RS123 and RS123w firmware allows remote authenticated users to execute script through cmdcookie. The upgrade/query.php handler fails to neutralize attacker-controlled cmdcookie content during web-page generation. A low-privileged adjacent-network user must induce another user to view the crafted response; no availability impact is reported.

CVSS severity4.8
Medium
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Teldat RS123 and RS123w firmware allows remote authenticated users to execute script through cmdcookie. The upgrade/query.php handler fails to neutralize attacker-controlled cmdcookie content during web-page generation. A low-privileged adjacent-network user must induce another user to view the crafted response; no availability impact is reported.

The record

CVE
CVE-2022-39996
Published
Aug 27, 2024
Updated
Aug 28, 2024
Vendor
Teldat
Product
Teldat RS123w Firmware
Classifications
CWE-79, T1203
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 27, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 28, 2024Record 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 <*

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

Teldat · Teldat RS123w Firmwareversion=0 <*
Teldat · Teldat RS123 Firmwareversion=0 <*

Published CVSS scores

4.8CISA-ADPCVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
4.8NIST NVDCVSS:3.1/AV:A/AC:L/PR:L/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)
Vectoradjacent
Privilegesauthenticated
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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