CVE-2024-13973: A post-auth SQL injection vulnerability in WebAdmin of Sophos Firewall versions older than 21.0 MR1 (21.0.1) c

Q: How do I fix CVE-2024-13973?

firewall firmware: upgrade to 21.0.1. Exact commands for each OS are on this page.

Q: Is CVE-2024-13973 being exploited?

CVE-2024-13973 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2024-13973 affect?

CVE-2024-13973 affects firewall firmware. Severity is medium (CVSS 6.8). A post-auth SQL injection vulnerability in WebAdmin of Sophos Firewall versions older than 21.0 MR1 (21.0.1) can potentially lead to administrators achieving arbitrary code execution.

Q: How urgent is CVE-2024-13973?

Priority 48/100. EPSS top 4%: very likely to be exploited

This week

MEDIUM 6.8UPGRADE

CVE-2024-13973 is a medium-severity flaw (CVSS 6.8) affecting firewall firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A post-auth SQL injection vulnerability in WebAdmin of Sophos Firewall versions older than 21.0 MR1 (21.0.1) can potentially lead to administrators achieving arbitrary code execution.

Why this priority

EPSS top 4%: very likely to be exploited

A fixed release or distro patch exists.

Risk facts

CVSS score	6.8 (Medium)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	12.3% (top 4%)
CISA exploited list	No
Weakness	CWE-89
Published	2025-07-21
Last modified	2026-06-17

Publisher (CNA): Sophos Limited · Vendor: sophos

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

Am I affected?

Timeline

2025-07-21 14:15 UTCPublished CVE record published
2026-06-17 07:03 UTCUpdated Record last modified

sophos firewall firmware UPGRADE

Affected: < 21.0.1

Fixed in: 21.0.1

Safe to downgrade to: no unaffected older release

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-2024-13973?

firewall firmware: upgrade to 21.0.1. Exact commands for each OS are on this page.

Is CVE-2024-13973 being exploited?

CVE-2024-13973 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-2024-13973 affect?

CVE-2024-13973 affects firewall firmware. Severity is medium (CVSS 6.8). A post-auth SQL injection vulnerability in WebAdmin of Sophos Firewall versions older than 21.0 MR1 (21.0.1) can potentially lead to administrators achieving arbitrary code execution.

How urgent is CVE-2024-13973?

Priority 48/100. EPSS top 4%: very likely to be exploited

Software pages

Sophos vulnerabilities

Related CVEs

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CVE-2025-7382 HIGH 8.8 UPGRADE A command injection vulnerability in WebAdmin of Sophos Firewall versions older than 21.0 MR2 (21.0.2) can lea
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CVE-2024-13974 HIGH 8.1 UPGRADE A business logic vulnerability in the Up2Date component of Sophos Firewall older than version 21.0 MR1 (20.0.1
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References

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