CVE-2025-40600

CRITICALNVD 9.89.8—Trending — 3 sources updated this week

9.8

Use of Externally-Controlled Format String vulnerability in the SonicOS SSL VPN interface allows a remote unauthenticated attacker to cause service disruption.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 53.6%
KEV: Not listed

Published

July 29, 2025

Last Modified

August 11, 2025

Advisory Details (1)

Auto-updated Jun 1, 2026

No patch confirmed yet.

generic

Security Advisory

https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2025-0013

Weakness Classification(1)

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

CWE-134Use of Externally-Controlled Format String

Data Freshness Timeline

(refreshed 9× in last 7d / 9× 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.

2026-06-02 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
2026-05-30 01:10 UTCEG score recompute
2026-05-30 01:10 UTCGHSA enrichment
2026-05-29 13:44 UTCepss_batch

Frequently asked(5)

What is CVE-2025-40600?

CVE-2025-40600 is a critical vulnerability published on July 29, 2025. Use of Externally-Controlled Format String vulnerability in the SonicOS SSL VPN interface allows a remote unauthenticated attacker to cause service disruption.

When was CVE-2025-40600 disclosed?

CVE-2025-40600 was first published in the National Vulnerability Database on July 29, 2025, with the most recent update on August 11, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2025-40600 actively exploited?

CVE-2025-40600 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 53.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2025-40600?

CVE-2025-40600 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2025-40600?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-40600, 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-2025-40600

📅 Published

🔄 Last Modified

📋 Advisory Details (1)

Security Advisory

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2025-40600?

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Frequently asked(5)

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