MEDIUM
OpenBSD 3.8, 3.9, and possibly earlier versions allows context-dependent attackers to cause a denial of service (kernel panic) by allocating more semaphores than the default
Published Aug 29, 2006
4.9
MEDIUMCVSS 2.0
EPSS 0.34%
Description
OpenBSD 3.8, 3.9, and possibly earlier versions allows context-dependent attackers to cause a denial of service (kernel panic) by allocating more semaphores than the default.
Affected products
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.
4.9 MEDIUM NVD
AV:L/AC:L/Au:N/C:N/I:N/A:C
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Complete
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
0.34% 0.00339
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.00339
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 (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.34% (0.00339) | 24.97th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.34% (0.00338) | 25.44th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.05% (0.00053) | 13.83th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.07% (0.00070) | 32.39th | v3 (v2023.03.01) |
| Jun 21, 2024 | 0.07% (0.00070) | 30.46th | v3 (v2023.03.01) |
| Apr 17, 2023 | 0.07% (0.00070) | 28.43th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.06% (0.00062) | 24.59th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.03% (0.01034) | 41.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.03% (0.01034) | 39.91th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.03% (0.01034) | 37.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.03% (0.01034) | 20.32th | v2 (v2022.01.01) |
Weaknesses (0)
No CWE recorded.
References (7)
- http://secunia.com/advisories/21642 third-party-advisoryx_refsource_SECUNIAPatchVendor Advisory
- http://securitytracker.com/id?1016756 vdb-entryx_refsource_SECTRACKPatch
- http://www.openbsd.org/errata.html#sem vendor-advisoryx_refsource_OPENBSD
- http://www.openbsd.org/errata38.html#sem vendor-advisoryx_refsource_OPENBSD
- http://www.osvdb.org/28195 vdb-entryx_refsource_OSVDB
- http://www.securityfocus.com/bid/19713 vdb-entryx_refsource_BIDPatch
- https://exchange.xforce.ibmcloud.com/vulnerabilities/28617 vdb-entryx_refsource_XF
| Link | Providers | Tags |
|---|---|---|
| http://secunia.com/advisories/21642 | third-party-advisoryx_refsource_SECUNIAPatchVendor Advisory | |
| http://securitytracker.com/id?1016756 | vdb-entryx_refsource_SECTRACKPatch | |
| http://www.openbsd.org/errata.html#sem | vendor-advisoryx_refsource_OPENBSD | |
| http://www.openbsd.org/errata38.html#sem | vendor-advisoryx_refsource_OPENBSD | |
| http://www.osvdb.org/28195 | vdb-entryx_refsource_OSVDB | |
| http://www.securityfocus.com/bid/19713 | vdb-entryx_refsource_BIDPatch | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/28617 | vdb-entryx_refsource_XF |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Aug 29, 2006
Updated Aug 7, 2024
Reserved Aug 28, 2006
Link CVE-2006-4435
CISA Vulnrichment
Updated n/a