CVE-2007-5603SSL VPN Memory Corruption
Stack-based buffer overflow in the SonicWall SSL-VPN NetExtender NELaunchCtrl ActiveX control before 2.1.0.51, and 2.5.x before 2.5.0.56, allows remote attackers to execute arbitrary code via a long string in the second argument to the AddRouteEntry method.
Published Nov 5, 2007 · Updated Apr 22, 2026
Key Facts
Patch immediately- CVE-2007-5603 is a critical-severity vulnerability (CVSS 9.3 v2) affecting SSL VPN (Sonicwall).
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 38% probability of exploitation in the next 30 days.
- Fixed versions are available, including SSL VPN 2.1.
- Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Scores
CVSS v2
9.3
AV:N/AC:M/Au:N/C:C/I:C/A:C
EPSS (30-day exploit likelihood)
38%
Higher than 98.5% of all scored CVEs
Exploit maturity
Weaponized
ATLAS score
70/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Not listed
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Weaponized
Public exploit code
2
Proof-of-concept links
In-the-wild evidence
1
Reports of active use
Advisories And Exploit References
- advisory27469
Description
Stack-based buffer overflow in the SonicWall SSL-VPN NetExtender NELaunchCtrl ActiveX control before 2.1.0.51, and 2.5.x before 2.5.0.56, allows remote attackers to execute arbitrary code via a long string in the second argument to the AddRouteEntry method.
Affected Products
1 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| SSL VPNSonicwall | See advisory | 2.1 |
Patched Releases
SSL VPN
2.1
Timeline
Publicly disclosed
Nov 5, 2007
Last updated
Apr 22, 2026
Weakness Type
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
References
- advisory27469
- exploitMSF sonicwall_addrouteentry.rb
- exploitExploitDB-16616
- exploit26288
- other3342
FAQ
Common Questions.
Stack-based buffer overflow in the SonicWall SSL-VPN NetExtender NELaunchCtrl ActiveX control before 2.1.0.51, and 2.5.x before 2.5.0.56, allows remote attackers to execute arbitrary code via a long string in the second argument to the AddRouteEntry method.
Affected: SSL VPN (Sonicwall). The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including SSL VPN 2.1.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Is CVE-2007-5603 On Your Attack Surface?
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