An issue has been found in PowerDNS Recursor before version 4.1.8 where a remote attacker sending a DNS query can trigger an out-of-bounds memory read while computing the hash of the query for a packet cache lookup, possibly leading to a crash
Published Dec 3, 2018
7.5
HIGHCVSS 3.0
EPSS 58.58%
Description
An issue has been found in PowerDNS Recursor before version 4.1.8 where a remote attacker sending a DNS query can trigger an out-of-bounds memory read while computing the hash of the query for a packet cache lookup, possibly leading to a crash.
Affected products
- Vendor n/a Product Pdns-Recursor Defaultn/a
- Version 4.1.8StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | Pdns-Recursor | n/a |
|
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.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:N/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
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (19 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 58.58% (0.58577) | 99.08th | v5 (v2026.06.15) |
| Jun 15, 2026 | 59.47% (0.59469) | 99.00th | v5 (v2026.06.15) |
| May 30, 2026 | 70.79% (0.70787) | 98.72th | v4 (v2025.03.14) |
| Nov 21, 2025 | 19.83% (0.19834) | 95.22th | v4 (v2025.03.14) |
| Nov 18, 2025 | 76.13% (0.76135) | 99.00th | v4 (v2025.03.14) |
| Mar 30, 2025 | 19.83% (0.19834) | 94.97th | v4 (v2025.03.14) |
| Mar 29, 2025 | 35.18% (0.35183) | 95.43th | v4 (v2025.03.14) |
| Mar 17, 2025 | 19.83% (0.19834) | 94.98th | v4 (v2025.03.14) |
| Dec 17, 2024 | 34.87% (0.34867) | 97.13th | v3 (v2023.03.01) |
| Oct 12, 2024 | 46.00% (0.46003) | 97.50th | v3 (v2023.03.01) |
| Mar 7, 2023 | 60.53% (0.60532) | 97.17th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.05% (0.01055) | 52.13th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.05% (0.01055) | 50.47th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.05% (0.01055) | 48.43th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.05% (0.01055) | 27.52th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.78% (0.00785) | 22.12th | v1 |
| Jan 6, 2022 | 0.78% (0.00785) | 21.52th | v1 |
| Sep 1, 2021 | 0.78% (0.00785) | 52.07th | v1 |
| Apr 14, 2021 | 0.78% (0.00785) | 0.00th | v1 |
References (2)
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16855 x_refsource_CONFIRMIssue TrackingThird Party Advisory
- https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2018-09.html x_refsource_MISCVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16855 | x_refsource_CONFIRMIssue TrackingThird Party Advisory | |
| https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2018-09.html | x_refsource_MISCVendor Advisory |
Change history (0)
No recorded changes yet.