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Servers and applications

CVE-2016-2181

The Anti-Replay feature in the DTLS implementation in OpenSSL before 1.1.0 mishandles early use of a new epoch number in conjunction with a large sequence number, which allows remote attackers to cause a denial of service (false-positive packet drops) via spoofed DTLS records, related to rec_layer_d1.c and ssl3_record.c.

Severity
High 7.5
Published
16 Sept 2016
Last changed
17 Jun 2026
Added to UpHeron
21 Oct 2026
Sources
NVD

Affected software

SoftwareAffected versions
OpenSSLServers and applications · cpe:a:openssl:openssl
  • Version 1.0.2h
  • Version 1.0.2g
  • Version 1.0.2f
  • Version 1.0.2e
All 30 release lines
  • Version 1.0.1
  • Version 1.0.1a
  • Version 1.0.1b
  • Version 1.0.1c
  • Version 1.0.1d
  • Version 1.0.1e
  • Version 1.0.1f
  • Version 1.0.1g
  • Version 1.0.1h
  • Version 1.0.1i
  • Version 1.0.1j
  • Version 1.0.1k
  • Version 1.0.1l
  • Version 1.0.1m
  • Version 1.0.1n
  • Version 1.0.1o
  • Version 1.0.1p
  • Version 1.0.1q
  • Version 1.0.1r
  • Version 1.0.1s
  • Version 1.0.1t
  • Version 1.0.2
  • Version 1.0.2a
  • Version 1.0.2b
  • Version 1.0.2c
  • Version 1.0.2d
  • Version 1.0.2e
  • Version 1.0.2f
  • Version 1.0.2g
  • Version 1.0.2h

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2016-2181
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2016-2181