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Servers and applications

CVE-2009-1386

ssl/s3_pkt.c in OpenSSL before 0.9.8i allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a DTLS ChangeCipherSpec packet that occurs before ClientHello.

Severity
Medium 5.0
Published
4 Jun 2009
Last changed
16 Jun 2026
Added to UpHeron
21 Oct 2026
Fixed in
0.9.8i
Exploit chance
80% in the next 30 daysHigher than 99% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
Null pointer dereference (CWE-476)
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
OpenSSLServers and applications · cpe:a:openssl:openssl
  • After 0.9.8 before 0.9.8i

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2009-1386
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2009-1386