UpHeron
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Servers and applications

CVE-2011-1922

daemon/worker.c in Unbound 1.x before 1.4.10, when debugging functionality and the interface-automatic option are enabled, allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a crafted DNS request that triggers improper error handling.

Severity
Medium 4.3
Published
31 May 2011
Last changed
16 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
7.1% in the next 30 daysHigher than 94% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
CWE-399
Attack
Over the network · No login needed
Attacker can
Slow it down
CVSS vector
AV:N/AC:M/Au:N/C:N/I:N/A:P
Sources
NVD

Affected software

SoftwareAffected versions
UnboundServers and applications · cpe:a:nlnetlabs:unbound
  • Version 1.4.9
  • Version 1.4.8
  • Version 1.4.7
  • Version 1.4.6
All 22 release lines
  • Version 1.0.0
  • Version 1.0.1
  • Version 1.0.2
  • Version 1.1.0
  • Version 1.1.1
  • Version 1.2.0
  • Version 1.2.1
  • Version 1.3.0
  • Version 1.3.1
  • Version 1.3.2
  • Version 1.3.3
  • Version 1.3.4
  • Version 1.4.0
  • Version 1.4.1
  • Version 1.4.2
  • Version 1.4.3
  • Version 1.4.4
  • Version 1.4.5
  • Version 1.4.6
  • Version 1.4.7
  • Version 1.4.8
  • Version 1.4.9

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2011-1922
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2011-1922