CVE-2016-2181

high-risk
Published 2016-09-16

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.

Do I need to act?

!
23.0% chance of exploitation in next 30 days
EPSS score — higher than 77% of all CVEs
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Vendors

63
/ 100
high-risk
Severity 26/34 · High
Exploitability 14/34 · Moderate
Exposure 23/34 · High