Vulnerability record · CVE-2019-25035 · published 27 April 2021
CVE-2019-25035: Nlnetlabs unbound out-of-bounds write vulnerability
Nlnetlabs · Unbound
Unbound before 1.9.5 allows an out-of-bounds write in sldns_bget_token_par. 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
Description
Unbound before 1.9.5 allows an out-of-bounds write in sldns_bget_token_par. 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
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.
References
| Link | Tags |
|---|---|
| https://lists.debian.org/debian-lts-announce/2021/05/msg00007.html | Mailing ListThird Party Advisory |
| https://ostif.org/our-audit-of-unbound-dns-by-x41-d-sec-full-results/ | Not ApplicableThird Party Advisory |
| https://security.netapp.com/advisory/ntap-20210507-0007/ | Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2021/05/msg00007.html | Mailing ListThird Party Advisory |
| https://ostif.org/our-audit-of-unbound-dns-by-x41-d-sec-full-results/ | Not ApplicableThird Party Advisory |
| https://security.netapp.com/advisory/ntap-20210507-0007/ | Third Party Advisory |
Track CVE-2019-25035 inside VULONE
Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.
Related vulnerabilities
Same products first, then exploited flaws of the same weakness class.
Source: NIST National Vulnerability Database (record CVE-2019-25035), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.
