CVE-2019-25040
HIGH
7.5
CVSS Score
Published: April 27, 2021 at 05:16 AM UTC
Updated: June 17, 2026 at 02:31 AM UTC
2 products affected across 2 vendorsDebian LinuxUnbound
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Severity
HIGH7.5
Exploit prediction
EPSS 2%
Description
Unbound before 1.9.5 allows an infinite loop via a compressed name in dname_pkt_copy. NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound installation cannot be remotely or locally exploited
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Debian Linux· Debiandrupal
95%v < 1.9.5
Affected range stops below 1.9.5, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (3)
Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2021/05/msg00007.htmlx_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://ostif.org/our-audit-of-unbound-dns-by-x41-d-sec-full-results/x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20210507-0007/CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-835
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