CVE-2021-21031Network attack vector

Restricted-resource access via lingering user sessions

Published Feb 11, 2021 · Updated Sep 16, 2024

Insufficient session expiration in Magento Commerce and Open Source 2.4.1 and earlier allows attackers to access restricted resources. The user-session invalidation path leaves sessions usable after they should expire, but Adobe has not disclosed the responsible code path. A still-valid session is required; admin-console access is not, and the documented consequence is unauthorized access to restricted resources.

CVSS severity6.8
Medium
EPSS probability1.67%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insufficient session expiration in Magento Commerce and Open Source 2.4.1 and earlier allows attackers to access restricted resources. The user-session invalidation path leaves sessions usable after they should expire, but Adobe has not disclosed the responsible code path. A still-valid session is required; admin-console access is not, and the documented consequence is unauthorized access to restricted resources.

The record

CVE
CVE-2021-21031
Published
Feb 11, 2021
Updated
Sep 16, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-613, T1550.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 11, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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?

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

7.5NIST National Vulnerability DatabaseAV:N/AC:L/Au:N/C:P/I:P/A:P
6.8Adobe Systems IncorporatedCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

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-613Insufficient Session Expiration
T1550.004Web 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

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Your stack

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