CVE-2024-5670: The web services of Softnext's products, Mail SQR Expert and Mail Archiving Expert do not properly validate us

This month

CRITICAL 9.8REMOTEMITIGATE

CVE-2024-5670 is a critical-severity flaw (CVSS 9.8) affecting sn os. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The web services of Softnext's products, Mail SQR Expert and Mail Archiving Expert do not properly validate user input, allowing unauthenticated remote attackers to inject arbitrary OS commands and execute them on the remote server.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.9% (top 40%)
CISA exploited list	No
Weakness	CWE-78
Published	2024-07-29
Last modified	2026-06-17

Publisher (CNA): TWCERT/CC · Vendor: softnext

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-07-29 03:15 UTCPublished CVE record published
2026-06-17 08:16 UTCUpdated Record last modified

softnext sn os MITIGATE

Affected: 10.3 · 12.1 · 12.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 10.3

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-5670?

sn os: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2024-5670 being exploited?

CVE-2024-5670 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-5670 affect?

CVE-2024-5670 affects sn os. Severity is critical (CVSS 9.8). The web services of Softnext's products, Mail SQR Expert and Mail Archiving Expert do not properly validate user input, allowing unauthenticated remote attackers to inject arbitrary OS commands and execute them on the remote server.

How urgent is CVE-2024-5670?

Priority 54/100. Critical severity; Remotely exploitable, no login, no user action

References

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