CVE-2021-28962

Administrator privilege escalation via CLI command injection

Published Jan 31, 2022 · Updated Aug 3, 2024

Command injection in Stormshield Network Security before 4.2.2 allows remote authenticated users with read-only administrator rights to gain privileges. Stormshield identifies the CLI/serverd command mechanism as the affected locus but has not disclosed how it accepts or executes injected commands. Exploitation requires a read-only administrator account and can cross that authorization boundary to obtain broader appliance privileges.

CVSS severity9.0
Critical
EPSS probability1.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in Stormshield Network Security before 4.2.2 allows remote authenticated users with read-only administrator rights to gain privileges. Stormshield identifies the CLI/serverd command mechanism as the affected locus but has not disclosed how it accepts or executes injected commands. Exploitation requires a read-only administrator account and can cross that authorization boundary to obtain broader appliance privileges.

The record

CVE
CVE-2021-28962
Published
Jan 31, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1059
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 31, 2022CVE 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 privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.0StormshieldCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
8.3StormshieldCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C
6.5NVDAV:N/AC:L/Au:S/C:P/I:P/A:P
7.2NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1059Command and Scripting Interpreter

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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