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CVE-2017-7508

26
FAUCET Score

CVE-2017-7508 is a remote denial-of-service vulnerability affecting OpenVPN versions prior to 2.4.3 and 2.3.17, triggered by receiving a malformed IPv6 packet. This vulnerability carries a CVSS score of 7.5 (HIGH), indicating a network-based attack with low complexity and a high impact on availability, though without affecting confidentiality or integrity. While no public exploit intelligence like Metasploit or ExploitDB entries exist, the vulnerability has garnered some community discussion and media coverage, suggesting awareness despite no indication of active exploitation or inclusion in CISA's KEV catalog.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.3.16CPE matchmatch criteria
cpe:2.3:a:openvpn:openvpn:*:*:*:*:*:*:*:*
2.4.0CPE matchmatch criteria
cpe:2.3:a:openvpn:openvpn:2.4.0:*:*:*:*:*:*:*
2.4.0CPE matchmatch criteria
cpe:2.3:a:openvpn:openvpn:2.4.0:alpha2:*:*:*:*:*:*
2.4.0CPE matchmatch criteria
cpe:2.3:a:openvpn:openvpn:2.4.0:beta1:*:*:*:*:*:*
2.4.0CPE matchmatch criteria
cpe:2.3:a:openvpn:openvpn:2.4.0:beta2:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
4.76%
Probability of exploitation in next 30 days
EPSS Percentile
91.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0476 is in the 84th percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2017-7508Important

openvpn: Multiple security issues fixed in OpenVPN 2.4.3 and 2.3.17

Jun 21, 2017

References

community.openvpn.net / openvpn/wiki/VulnerabilitiesFixedInOpenVPN243
Vendor Advisory
debian.org / security/2017/dsa-3900
securityfocus.com / bid/99230
Third Party AdvisoryVDB Entry
securitytracker.com / id/1038768