CVE-2025-40601

HIGHNVD 7.57.5—

7.5

A Stack-based buffer overflow vulnerability in the SonicOS SSLVPN service allows a remote unauthenticated attacker to cause Denial of Service (DoS), which could cause an impacted firewall to crash.

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 14.3%
KEV: Not listed

Published

November 20, 2025

Last Modified

December 12, 2025

References (1)

PSIRT@sonicwallhttps://psirt.global.sonicwall.com/vuln-detail/SNWLID-2025-0016

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-121Stack-based Buffer Overflow

Data Freshness Timeline

(refreshed 12× in last 7d / 15× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-05 22:46 UTCepss_batch
2026-06-05 22:46 UTCepss_batch
2026-06-05 06:10 UTCepss_batch
2026-06-05 06:10 UTCepss_batch
2026-06-04 13:12 UTCepss_batch
2026-06-04 13:12 UTCepss_batch
2026-06-02 20:12 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-29 13:37 UTCEG score recompute
2026-05-29 13:37 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2025-40601?

CVE-2025-40601 is a high vulnerability published on November 20, 2025. A Stack-based buffer overflow vulnerability in the SonicOS SSLVPN service allows a remote unauthenticated attacker to cause Denial of Service (DoS), which could cause an impacted firewall to crash.

When was CVE-2025-40601 disclosed?

CVE-2025-40601 was first published in the National Vulnerability Database on November 20, 2025, with the most recent update on December 12, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2025-40601 actively exploited?

CVE-2025-40601 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 14.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2025-40601?

CVE-2025-40601 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2025-40601?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-40601, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2025-40601

📅 Published

🔄 Last Modified

🔗 References (1)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2025-40601?

🔗 Related CVEs(same CWE)

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Published

Last Modified

References (1)

Frequently asked(5)

Related CVEs(same CWE)