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CVE-2019-10191
A vulnerability was discovered in DNS resolver of knot resolver before version 4.1.0 which allows remote attackers to downgrade…
Medium6.3EPSS 1.9%
- Published
- Updated
- Reserved
- Assigned by
- redhat
Description
A vulnerability was discovered in DNS resolver of knot resolver before version 4.1.0 which allows remote attackers to downgrade DNSSEC-secure domains to DNSSEC-insecure state, opening possibility of domain hijack using attacks against insecure DNS protocol.
Timeline
ID reserved
By redhat
- 4 months later
· 4 months later
Published
- 6 years later
· 6 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| redhatCNA (assigner) | 3.0 | Medium6.3 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L |
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
- EPSS (exploitation in 30 days)
- 1.9% · top 20% of all CVEs (9 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.3.
Weakness
Affected products
- affected all before 4.1.0
References (5)
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10191 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://www.knot-resolver.cz/2019-07-10-knot-resolver-4.1.0.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- FEDORA-2019-fdb50c675d (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- FEDORA-2019-20f95b0b39 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- https://lists.debian.org/debian-lts-announce/2024/04/msg00017.html (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2019-2214 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2019-10191)Record last updated .