NVD / CVE Program· CNA Sophos

CVE-2025-7624: An SQL injection vulnerability in the legacy (transparent) SMTP proxy of Sophos Firewall versions older than 21.0 MR2 (21.0.2) can lead to r

Noroxi assessment

Priority: Plan (action score 42/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 10.5% (FIRST EPSS); higher than 95.7% of all records.
Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
According to CISA the attack is automatable: targets can be found by mass scanning.
Fixed version: Sophos Sophos Firewall 21.0 MR2 (21.0.2).

Add it to your regular patch cycle. Upgrade to Sophos Sophos Firewall 21.0 MR2 (21.0.2) or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

An SQL injection vulnerability in the legacy (transparent) SMTP proxy of Sophos Firewall versions older than 21.0 MR2 (21.0.2) can lead to remote code execution, if a quarantining policy is active for Email and SFOS was upgraded from a version older than 21.0 GA.

CriticalCVSS 9.8 · v3.1—No exploit Fix available

BDU:2025-14339

Published: Jul 21, 2025
Updated: Jun 17, 2026
EPSS: 10.5% · 95th percentile
CWE: CWE-89

Report tools

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Action score

Plan

Add it to your regular patch cycle.

CVSS: 39 / 40 · 9.8 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 3 / 30 · 10.5%

CISA SSVC decision

Exploitation: none
Automatable: yes
Technical impact: total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: —
CNA · Sophos: 9.8; NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
A fix has been released

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
sophos	firewall firmware	cpe:2.3:o:sophos:firewall_firmware
sophos	firewall	cpe:2.3:h:sophos:firewall

Using firewall firmware? Add it to your stack and be the first to know about CVEs like this one. (Firewall)

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

sophos firewall firmwarebefore 21.0.2

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Sophos). Independent of NVD's CPE analysis and usually ahead of it.

Sophos Sophos Firewall
- before 21.0 MR2 (21.0.2)affected · semver

Same product

sophos: all records

Other highest-scoring records for the same primary product.

CVE-2025-6704An arbitrary file writing vulnerability in the Secure PDF eXchange (SPX) feature of Sophos Firewall versions older than 21.0 MR2 (21.0.2) ca
43Plan
CVE-2024-12728A weak credentials vulnerability potentially allows privileged system access via SSH to Sophos Firewall older than version 20.0 MR3 (20.0.3)
39Monitor
CVE-2024-12727A pre-auth SQL injection vulnerability in the email protection feature of Sophos Firewall versions older than 21.0 MR1 (21.0.1) allows acces
39Monitor

Published before and after this one in the same product

← EarlierCVE-2024-13973Jul 21, 2025 · A post-auth SQL injection vulnerability in WebAdmin of Sophos Firewall versions older than 21.0 MR1 (21.0.1) can potentially lead to adminis
32Monitor
← EarlierCVE-2024-13974Jul 21, 2025 · A business logic vulnerability in the Up2Date component of Sophos Firewall older than version 21.0 MR1 (20.0.1) can lead to attackers contro
35Monitor
← EarlierCVE-2025-7382Jul 21, 2025 · A command injection vulnerability in WebAdmin of Sophos Firewall versions older than 21.0 MR2 (21.0.2) can lead to adjacent attackers achiev
36Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
Sophos Sophos Firewall	21.0 MR2 (21.0.2)	Vendor (CNA)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days+2% in 7 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

CVE-2024-12727214 days apartA pre-auth SQL injection vulnerability in the email protection feature of Sophos Firewall versions older than 21.0 MR1 (21.0.1) allows acces
39Monitor
CVE-2024-139730 days apartA post-auth SQL injection vulnerability in WebAdmin of Sophos Firewall versions older than 21.0 MR1 (21.0.1) can potentially lead to adminis
32Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

SophosBugcrowd · paid · up to $80,000

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is required.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: high · data can be read
Integrity: high · data or configuration can be modified
Availability: high · the service can be disrupted

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

Weakness class (CWE)

CWE-89 · Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd-secondary

Root cause

The query text is built by concatenating user input. The database cannot tell where the data ends and the command begins.

The bug in code

The whole CWE-89 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1const owner = req.query.owner;
2const rows = await db.query(
3  "SELECT * FROM files WHERE owner = '" + owner + "'"
4);

Fixed

1const owner = req.query.owner;
2const rows = await db.query(
3  "SELECT * FROM files WHERE owner = $1",
4  [owner]
5);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

—

Change log

Fix✗ → ✓Sep 28, 2026, 10:08 PM UTC

For records you follow, these changes also arrive as notifications. →

References

www.sophos.com/en-us/security-advisories/sophos-sa-20250721-sfos-rce

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records