CVE-2019-25033
CRITICALUnbound < 1.9.5 - Integer Overflow in Regional Allocator
Title source: llmDescription
Unbound before 1.9.5 allows an integer overflow in the regional allocator via the ALIGN_UP macro. 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
References (3)
Core 3
Core References
Not Applicable, Third Party Advisory x_refsource_misc
https://ostif.org/our-audit-of-unbound-dns-by-x41-d-sec-full-results/
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2021/05/msg00007.html
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20210507-0007/
Scores
CVSS v3
9.8
EPSS
0.0178
EPSS Percentile
75.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-190
Status
published
Products (2)
debian/debian_linux
9.0
nlnetlabs/unbound
< 1.9.5
Published
Apr 27, 2021
Tracked Since
Feb 18, 2026