UpHeron
All vulnerabilities

Servers and applications

CVE-2017-15105

A flaw was found in the way unbound before 1.6.8 validated wildcard-synthesized NSEC records. An improperly validated wildcard NSEC record could be used to prove the non-existence (NXDOMAIN answer) of an existing wildcard record, or trick unbound into accepting a NODATA proof.

Severity
Medium 5.3
Published
23 Jan 2018
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
1.6.8
Exploit chance
3.2% in the next 30 daysHigher than 88% of CVEs. EPSS by FIRST, 11 Nov 2026
Weakness
CWE-358Improper input validation (CWE-20)
Attack
Over the network · No login needed · No user action needed
Attacker can
Change some data
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Sources
NVD

Affected software

SoftwareAffected versions
UnboundServers and applications · cpe:a:nlnetlabs:unbound
  • Every version before 1.6.8

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2017-15105
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2017-15105