CVE-2021-38618Network attack vector

Unauthorized account access via JSESSIONID mismanagement

Published Oct 4, 2021 · Updated May 30, 2025

Authentication bypass in GFOS Workforce Management 4.8.272.1 allows remote attackers to access an account without its password. The login page mismanages JSESSIONID state when presented with a known user's other credentials, accepting a session without validating that user's password. Network access and knowledge of the account's non-password credentials are required, and the resulting session carries the permissions assigned to that account.

CVSS severity7.4
High
EPSS probability0.99%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in GFOS Workforce Management 4.8.272.1 allows remote attackers to access an account without its password. The login page mismanages JSESSIONID state when presented with a known user's other credentials, accepting a session without validating that user's password. Network access and knowledge of the account's non-password credentials are required, and the resulting session carries the permissions assigned to that account.

The record

CVE
CVE-2021-38618
Published
Oct 4, 2021
Updated
May 30, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 4, 2021CVE publishedPublication date reported by the CVE source.
  2. May 30, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.1NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P
7.4MITRECVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/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.

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

No sourced classifications are available.

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

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Your stack

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