CVE-2021-31224

Policy duplication via missing backend authorization check

Published Jul 13, 2021 · Updated Aug 3, 2024

Authorization bypass in Stormshield SES Evolution before 2.1.0 allows context-dependent attackers to duplicate security policies. The backend accepts a policy-duplication operation in a read-only user's security-policy context without enforcing the required write authorization. Exploitation requires that user to execute a malicious program; the resulting integrity impact is limited to creation of a duplicate policy.

CVSS severity3.5
Low
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Stormshield SES Evolution before 2.1.0 allows context-dependent attackers to duplicate security policies. The backend accepts a policy-duplication operation in a read-only user's security-policy context without enforcing the required write authorization. Exploitation requires that user to execute a malicious program; the resulting integrity impact is limited to creation of a duplicate policy.

The record

CVE
CVE-2021-31224
Published
Jul 13, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1203
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 13, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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 vectoradjacent
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

3.5NIST NVDCVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
2.9NIST NVDAV:A/AC:M/Au:N/C:N/I:P/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1203Exploitation for Client Execution

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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