CVE-2016-8610

HIGHEPSS 98th pctl

7.5

CVSS v3

Description

A denial of service flaw was found in OpenSSL 0.9.8, 1.0.1, 1.0.2 through 1.0.2h, and 1.1.0 in the way the TLS/SSL protocol defined processing of ALERT packets during a connection handshake. A remote attacker could use this flaw to make a TLS/SSL server consume an excessive amount of CPU and fail to accept connections from other clients.

CWE-400Resource Exhaustion

How to fix

Remediation Available

opensslDebian

Fixed in:1.0.2j-1CVE-2016-8610

gnutls26Ubuntu

Fixed in:2.12.23-12ubuntu2.6USN-3183-1

Fixed in:2.12.23-12ubuntu2.7USN-3183-2

gnutls28Ubuntu

Fixed in:3.4.10-4ubuntu1.2USN-3183-1

libgnutls26Ubuntu

Fixed in:2.12.23-12ubuntu2.6USN-3183-1

Fixed in:2.12.23-12ubuntu2.7USN-3183-2

libgnutls30Ubuntu

Fixed in:3.4.10-4ubuntu1.2USN-3183-1

libssl1.0.0Ubuntu

Fixed in:1.0.1f-1ubuntu2.22USN-3181-1

Fixed in:1.0.2g-1ubuntu4.6USN-3181-1

opensslUbuntu

Fixed in:1.0.1f-1ubuntu2.22USN-3181-1

Fixed in:1.0.2g-1ubuntu4.6USN-3181-1

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

39.66%probability of exploitation in 30 days

98thpercentile

Very high risk: more likely to be exploited than 98% of all known CVEs.

References

Related Vulnerabilities

Other CWE-400 (Resource Exhaustion) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-44487	High	7.5	100%	KEV	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2011-3192	High	7.8	99%	-	Fix
CVE-2019-11478	Medium	5.3	95%	-	Fix
CVE-2023-21547	High	7.5	89%	-	Fix
CVE-2024-25617	Medium	5.3	89%	-	Fix

Common questions

How do I fix CVE-2016-8610?

Published advisories record a fix for 7 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2016-8610 being actively exploited?

Not that we know of. CVE-2016-8610 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 39.7% is the estimated probability that it will be exploited in the next 30 days. That is higher than 98% of all scored CVEs.

How severe is CVE-2016-8610?

CVE-2016-8610 has a CVSS v3 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2016-8610 affect?

Published advisories record a fix for openssl (Debian), gnutls26 (Ubuntu), gnutls28 (Ubuntu), libgnutls26 (Ubuntu), and 3 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-13.