CVE-2004-1109 json
The FWDRV.SYS driver in Kerio Personal Firewall 4.1.1 and earlier allows remote attackers to cause a denial of service (CPU consumption and…
published 2004-12-01 21 y ago modified 2026-06-16 4 mo ago also EUVD-2004-1107
- cvss
- 5.0
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.2%
- EPSS 3.2% chance of exploitation in 30 days, percentile 88%
- public exploits
- 1
- Exploit-DB
Summary
The FWDRV.SYS driver in Kerio Personal Firewall 4.1.1 and earlier allows remote attackers to cause a denial of service (CPU consumption and system freeze from infinite loop) via a (1) TCP, (2) UDP, or (3) ICMP packet with a zero length IP Option field.
Patch / fix
- securityfocus.com/bid/11639 advisory
Timeline
- First public exploit (EDB-626)
- Published
Exploit prediction
3.24% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- EDB-626 Kerio Personal Firewall 4.1.1 - Multiple IP Options Denial of Service Vulnerabilities dos, 2004-11-12
- securityfocus.com http://www.securityfocus.com/bid/11639 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
References
-
securityfocus.com
/bid/11639
vdb-entry, exploit, patch, vendor-advisory
-
kerio.com
/security_advisory.html
vendor-advisory
-
exchange.xforce.ibmcloud.com
/vulnerabilities/17992
vdb-entry
-
eeye.com
/html/research/advisories/AD20041109.html
third-party-advisory
Sources
- CVE List CVE-2004-1109
- NVD CVE-2004-1109
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.