CVE-2023-41084Network attack vector

Session hijacking via unvalidated session cookies

Published Sep 18, 2023 · Updated Aug 2, 2024

Session-management failure in Socomec MODULYS GP web firmware 01.12.10 allows remote attackers to steal session cookies. The web application accepts session cookies without validating their integrity, allowing a stolen cookie to be replayed as an authenticated session. Network access to the web interface is sufficient, and the replayed session grants every action permitted to the impersonated account on the UPS.

CVSS severity10.0
Critical
EPSS probability0.72%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Session-management failure in Socomec MODULYS GP web firmware 01.12.10 allows remote attackers to steal session cookies. The web application accepts session cookies without validating their integrity, allowing a stolen cookie to be replayed as an authenticated session. Network access to the web interface is sufficient, and the replayed session grants every action permitted to the impersonated account on the UPS.

The record

CVE
CVE-2023-41084
Published
Sep 18, 2023
Updated
Aug 2, 2024
Vendor
Socomec
Product
MODULYS GP
Classifications
CWE-565, T1539
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 18, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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=01.12.10
  2. Affected versionversion=v01.12.10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Socomec · MODULYS GPversion=01.12.10; version=v01.12.10

Published CVSS scores

10.0CISA ICS-CERTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/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 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 exploitUnconfirmed

Weakness, pattern, technique

CWE-565Reliance on Cookies without Validation and Integrity Checking
T1539Steal Web Session Cookie

Public exploit references

No public exploit references are available in this record.

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo