PoC Index

CVE-2016-8858

HIGH 7.8EPSS 29.5%

The kex_input_kexinit function in kex.c in OpenSSH 6.x and 7.x through 7.3 allows remote attackers to cause a denial of service (memory consumption) by sending many duplicate KEXINIT requests. NOTE: a third party reports that "OpenSSH upstream does not consider this as a security issue."

CVSS v3.1
7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v3.0
7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v2.0
7.8 HIGHAV:N/AC:L/Au:N/C:N/I:N/A:C
EPSS
29.46% chance of exploitation in the next 30 days, 98th percentile
Published
2016-12-09
Updated
2026-05-29

Proof-of-concept exploits (1)

References

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