The FWDRV driver in Kerio Personal Firewall 4.2 and Server Firewall 1.1.1 allows local users to cause a denial of service (crash) by setting the PAGE_NOACCESS or PAGE_GUARD protection on the Page Environment Block (PEB), which triggers an exception, aka the "PEB lockout vulnerability."
Published Oct 23, 2005
2.1
LOWCVSS 2.0
EPSS 0.38%
Description
The FWDRV driver in Kerio Personal Firewall 4.2 and Server Firewall 1.1.1 allows local users to cause a denial of service (crash) by setting the PAGE_NOACCESS or PAGE_GUARD protection on the Page Environment Block (PEB), which triggers an exception, aka the "PEB lockout vulnerability."
Affected products
No data.
- 4.2
- 1.1.1
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:L/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.38% (0.00375) | 29.03th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.37% (0.00372) | 28.73th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.10% (0.00096) | 24.69th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 5.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.10% (0.01104) | 54.09th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.10% (0.01104) | 52.45th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.10% (0.01104) | 50.41th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.10% (0.01104) | 28.85th | v2 (v2022.01.01) |
No CWE recorded.
References (8)
- http://lists.grok.org.uk/pipermail/full-disclosure/2005-October/037958.html mailing-listx_refsource_FULLDISCVendor Advisory
- http://pb.specialised.info/all/adv/kerio-fwdrv-dos-adv.txt x_refsource_MISCVendor Advisory
- http://seclists.org/bugtraq/2005/Oct/166 mailing-listx_refsource_BUGTRAQ
- http://secunia.com/advisories/17155 third-party-advisoryx_refsource_SECUNIAPatchVendor Advisory
- http://securityreason.com/securityalert/78 third-party-advisoryx_refsource_SREASON
- http://www.kerio.com/security_advisory.html x_refsource_CONFIRMPatchVendor Advisory
- http://www.osvdb.org/19961 vdb-entryx_refsource_OSVDB
- http://www.securityfocus.com/bid/15094 vdb-entryx_refsource_BID
| Link | Providers | Tags |
|---|---|---|
| http://lists.grok.org.uk/pipermail/full-disclosure/2005-October/037958.html | mailing-listx_refsource_FULLDISCVendor Advisory | |
| http://pb.specialised.info/all/adv/kerio-fwdrv-dos-adv.txt | x_refsource_MISCVendor Advisory | |
| http://seclists.org/bugtraq/2005/Oct/166 | mailing-listx_refsource_BUGTRAQ | |
| http://secunia.com/advisories/17155 | third-party-advisoryx_refsource_SECUNIAPatchVendor Advisory | |
| http://securityreason.com/securityalert/78 | third-party-advisoryx_refsource_SREASON | |
| http://www.kerio.com/security_advisory.html | x_refsource_CONFIRMPatchVendor Advisory | |
| http://www.osvdb.org/19961 | vdb-entryx_refsource_OSVDB | |
| http://www.securityfocus.com/bid/15094 | vdb-entryx_refsource_BID |
Change history (0)
No recorded changes yet.