Is CVE-2017-7479 in the CISA KEV catalog?

No. CVE-2017-7479 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2017-7479?

CVE-2017-7479 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2017-7479?

CVE-2017-7479 has an EPSS score of 1.87% (77th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2017-7479?

Upgrade openvpn on debian 11 to 2.4.0-5 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2017-7479

MEDIUMEPSS 77th pctl

6.5

CVSS v3

NVD

Description

OpenVPN versions before 2.3.15 and before 2.4.2 are vulnerable to reachable assertion when packet-ID counter rolls over resulting into Denial of Service of server by authenticated attacker.

CWE-617

How to fix

Remediation Available

openvpnDebian

Fixed in:2.4.0-5CVE-2017-7479

openvpnUbuntu

Fixed in:2.3.2-7ubuntu3.2USN-3339-1

Fixed in:2.3.10-1ubuntu2.1USN-3339-1

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 RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

1.87%probability of exploitation in 30 days

77thpercentile

Elevated risk: more likely to be exploited than 77% of all known CVEs.

References

Vendor Advisory1

community.openvpn.net

Other references3

Related Vulnerabilities

Other CWE-617 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-8617	High	7.5	93%	-	Fix
CVE-2020-36222	High	7.5	78%	-	Fix
CVE-2006-5779	High	7.5	75%	-	Fix
CVE-2021-27212	High	7.5	64%	-	Fix
CVE-2018-5740	High	7.5	59%	-	Fix
CVE-2023-28425	Medium	5.5	55%	-	Fix

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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.