CVE detail
CVE-2025-40601
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.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 11.0 · diversity 6.5 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 0
- within the 30d window
- Peak daily
- 0
- highest bucket
Evidence
Source links by recency
2 source links · newest first
- SonicWall flags SSLVPN flaw allowing firewall crashesSecurity Affairs
SonicWall warns of a high-severity buffer overflow flaw in SonicOS SSLVPN (CVE-2025-40601) that lets attackers crash Gen7 and Gen8 firewalls. A new high-severity SonicOS SSLVPN flaw, tracked as CVE-2025-40601 (CVSS score of 7.5), allows attackers to crash SonicWall Gen7 and Gen8 firewalls. SonicWall is urging all customers to apply patches immediately, as the issue stems […]
newssecurityaffairs.comNov 23, 2025, 10:34 AM The vulnerabilities could be exploited to cause a denial-of-service (DoS) condition, execute arbitrary code, or access arbitrary files and directories.
newswww.securityweek.comNov 21, 2025, 12:27 PM
Exploit code
Public exploit repository references
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0 repository references · best confidence N/A · max 0 stars
Related records
Similar CVEs
6 related CVEs with shared weakness or product evidence
- CVE-2026-3439CVSS 4.9 · Medium
A post-authentication Stack-based Buffer Overflow vulnerability in SonicOS certificate handling allows a remote attacker to crash a firewall.
- CVE-2026-0399CVSS 4.9 · Medium
Multiple post-authentication stack-based buffer overflow vulnerabilities in the SonicOS management interface due to improper bounds checking in a API endpoint.
- CVE-2026-0402CVSS 4.9 · Medium
A post-authentication Out-of-bounds Read vulnerability in SonicOS allows a remote attacker to crash a firewall.
- CVE-2026-0401CVSS 4.9 · Medium
A post-authentication NULL Pointer Dereference vulnerability in SonicOS allows a remote attacker to crash a firewall.
- CVE-2026-0400CVSS 4.9 · Medium
A post-authentication Format String vulnerability in SonicOS allows a remote attacker to crash a firewall.
- CVE-2025-40600CVSS 9.8 · Critical
Use of Externally-Controlled Format String vulnerability in the SonicOS SSL VPN interface allows a remote unauthenticated attacker to cause service disruption.