UpHeron
All vulnerabilities

Servers and applications

CVE-2002-1221

BIND 8.x through 8.3.3 allows remote attackers to cause a denial of service (crash) via SIG RR elements with invalid expiry times, which are removed from the internal BIND database and later cause a null dereference.

Severity
Medium 5.0
Published
29 Nov 2002
Last changed
16 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
7.6% in the next 30 daysHigher than 94% of CVEs. EPSS by FIRST, 12 Nov 2026
Attack
Over the network · No login needed
Attacker can
Slow it down
CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
Sources
NVD

Affected software

SoftwareAffected versions
BIND 9Servers and applications · cpe:a:isc:bind
  • Version 8.3.3
  • Version 8.3.2
  • Version 8.3.1
  • Version 8.3.0
All 14 release lines
  • Version 8.1
  • Version 8.1.1
  • Version 8.1.2
  • Version 8.2
  • Version 8.2.1
  • Version 8.2.2
  • Version 8.2.3
  • Version 8.2.4
  • Version 8.2.5
  • Version 8.2.6
  • Version 8.3.0
  • Version 8.3.1
  • Version 8.3.2
  • Version 8.3.3

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2002-1221
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2002-1221