How severe is CVE-2025-40605?

CVE-2025-40605 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2025-40605 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-40605?

CVE-2025-40605 primarily affects Sonicwall Email Security Appliance 5000 Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-40605?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-40605 have an EU (EUVD) identifier?

Yes. CVE-2025-40605 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-198276.

When was CVE-2025-40605 published?

CVE-2025-40605 was published on 2025-11-20 and last updated on 2026-06-17.

CVE-2025-40605

CVE-2025-40605 is a medium-severity vulnerability in Sonicwall Email Security Appliance 5000 Firmware with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-23.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-198276
Weakness: CWE-23
Affected product: Sonicwall Email Security Appliance 5000 Firmware
Published: 2025-11-20
Last modified: 2026-06-17

Description

A Path Traversal vulnerability has been identified in the Email Security appliance allows an attacker to manipulate file system paths by injecting crafted directory-traversal sequences (such as ../) and may access files and directories outside the intended restricted path.

Frequently asked questions

What is CVE-2025-40605?: A Path Traversal vulnerability has been identified in the Email Security appliance allows an attacker to manipulate file system paths by injecting crafted directory-traversal sequences (such as ../) and may access files and directories outside the intended restricted path.
How severe is CVE-2025-40605?: CVE-2025-40605 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2025-40605 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-40605?: CVE-2025-40605 primarily affects Sonicwall Email Security Appliance 5000 Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-40605?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-40605 have an EU (EUVD) identifier?: Yes. CVE-2025-40605 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-198276.
When was CVE-2025-40605 published?: CVE-2025-40605 was published on 2025-11-20 and last updated on 2026-06-17.

References

https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2025-0018

Affected products (5)

cpe:2.3:o:sonicwall:email_security_appliance_5000_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:sonicwall:email_security_appliance_5050_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:sonicwall:email_security_appliance_7000_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:sonicwall:email_security_appliance_7050_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:sonicwall:email_security_appliance_9000_firmware:*:*:*:*:*:*:*:*

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