MEDIUM
Unbound before 1.4.4 does not send responses for signed zones after mishandling an unspecified query, which allows remote attackers to cause a denial of service (DNSSEC outage) via a crafted query
Published Jun 2, 2011
5.0
MEDIUMCVSS 2.0
EPSS 2.70%
Description
Unbound before 1.4.4 does not send responses for signed zones after mishandling an unspecified query, which allows remote attackers to cause a denial of service (DNSSEC outage) via a crafted query.
Affected products
No data.
OR
- ≤ 1.4.3
- 0.0
- 0.1
- 0.2
- 0.3
- 0.4
- 0.5
- 0.6
- 0.7
- 0.7.1
- 0.7.2
- 0.8
- 0.09
- 0.10
- 0.11
- 1.0.0
- 1.0.1
- 1.0.2
- 1.1.0
- 1.1.1
- 1.2.0
- 1.2.1
- 1.3.0
- 1.3.1
- 1.3.2
- 1.3.3
- 1.3.4
- 1.4.0
- 1.4.1
- 1.4.2
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.
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
2.70% 0.02701
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
EPSS probability 0.02701
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 (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 2.70% (0.02701) | 85.42th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.67% (0.02667) | 83.73th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.19% (0.00189) | 38.54th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.77% (0.00766) | 81.90th | v3 (v2023.03.01) |
| May 24, 2024 | 0.43% (0.00426) | 74.31th | v3 (v2023.03.01) |
| May 10, 2024 | 0.36% (0.00358) | 72.00th | v3 (v2023.03.01) |
| Apr 25, 2024 | 0.30% (0.00303) | 69.31th | v3 (v2023.03.01) |
| Mar 15, 2024 | 0.28% (0.00284) | 67.95th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.26% (0.00257) | 64.50th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.77% (0.00766) | 78.39th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.14% (0.01136) | 59.45th | v2 (v2022.01.01) |
| Oct 18, 2022 | 1.14% (0.01136) | 58.28th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.14% (0.01136) | 56.27th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.14% (0.01136) | 34.23th | v2 (v2022.01.01) |
Weaknesses (1)
References (3)
- http://packages.debian.org/changelogs/pool/main/u/unbound/unbound_1.4.6-1/changelog x_refsource_MISC
- http://unbound.nlnetlabs.nl/downloads/unbound-1.4.4.tar.gz x_refsource_MISCPatch
- http://www.debian.org/security/2011/dsa-2243 vendor-advisoryx_refsource_DEBIAN
| Link | Providers | Tags |
|---|---|---|
| http://packages.debian.org/changelogs/pool/main/u/unbound/unbound_1.4.6-1/changelog | x_refsource_MISC | |
| http://unbound.nlnetlabs.nl/downloads/unbound-1.4.4.tar.gz | x_refsource_MISCPatch | |
| http://www.debian.org/security/2011/dsa-2243 | vendor-advisoryx_refsource_DEBIAN |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jun 2, 2011
Updated Sep 16, 2024
Reserved Nov 19, 2009
Link CVE-2009-4008
CISA Vulnrichment
Updated n/a