CVE-2023-41089

Session impersonation via cookie header

Published Oct 19, 2023 · Updated Sep 12, 2024

Improper authentication in DEXMA DexGate version 20130114 allows remote attackers to impersonate users via crafted cookie headers while sessions remain active. The gateway accepts a cookie header that lets requests appear legitimate instead of enforcing authentication on each request. An attacker needs network access and an active device session; successful abuse can expose data, change settings, or interrupt gateway operations.

CVSS severity8.8
High
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in DEXMA DexGate version 20130114 allows remote attackers to impersonate users via crafted cookie headers while sessions remain active. The gateway accepts a cookie header that lets requests appear legitimate instead of enforcing authentication on each request. An attacker needs network access and an active device session; successful abuse can expose data, change settings, or interrupt gateway operations.

The record

CVE
CVE-2023-41089
Published
Oct 19, 2023
Updated
Sep 12, 2024
Vendor
DEXMA
Product
DexGate
Classifications
CWE-287, T1539
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 19, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 12, 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=version 20130114

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

DEXMA · DexGateversion=version 20130114

Published CVSS scores

8.0ICS-CERTCVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication
T1539Steal Web Session Cookie

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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