CVE-2021-28962
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedStormshield Network Security (SNS) before 4.2.2 allows a read-only administrator to gain privileges via CLI commands.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceA privilege escalation vulnerability in Stormshield Network Security (SNS) allows authenticated read-only administrators to gain elevated privileges through specific CLI commands. This bypasses the intended permission model where read-only admins should only have viewing access.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data>= 2.5.0, < 2.7.9>= 2.8.0, < 3.7.21>= 3.8.0, < 3.11.9>= 4.0.0, < 4.2.2CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
-
Identify SNS versionRun `show version` in the Stormshield CLI or check the product information in the web administration interfaceAffected if The installed version is >= 2.5.0 and < 2.7.9, OR >= 2.8.0 and < 3.7.21, OR >= 3.8.0 and < 3.11.9, OR >= 4.0.0 and < 4.2.2
-
Locate read-only administrator accountsRun `show admin` in the CLI or inspect the administrator accounts section in the web interface to list all configured admin users and their permission levelsAffected if Any read-only administrator accounts exist on the device
-
Examine CLI audit logs for suspicious activityReview CLI logging or audit logs for commands executed by read-only accounts, specifically looking for privilege escalation patterns or elevated commandsAffected if CLI logs show read-only accounts executing commands outside their intended read-only scope, or patterns indicating privilege escalation attempts
The environment is affected if the installed Stormshield SNS version falls within the vulnerable ranges AND read-only administrator accounts exist on the device.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped2.7.93.7.213.11.9
Upgrade Stormshield SNS to version 4.2.2 or later to remediate this vulnerability. Consider reviewing administrator accounts and CLI command logging following the upgrade.
Upgrade to SNS 4.2.2 or later
- Verify current SNS version by checking the administration interface or running 'fwadmin --version'
- Review current configuration and perform a full backup according to Stormschild backup procedures
- Plan maintenance window as upgrades may require brief downtime
- Download SNS version 4.2.2 or later from Stormshield customer portal
- Follow Stormshield official upgrade procedure documented in administration guide (typically via CLI or web interface)
- After upgrade, verify the system is running version 4.2.2 or later using 'fwadmin --version'
- Confirm read-only administrator accounts can no longer execute privileged CLI commands
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,800.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-28962 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2021-28962 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data