How severe is CVE-2017-5868?

CVE-2017-5868 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2017-5868 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-5868?

CVE-2017-5868 affects Openvpn Openvpn Access Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-5868?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2017-5868 published?

CVE-2017-5868 was published on 2017-05-26 and last updated on 2026-06-17.

CVE-2017-5868

CVE-2017-5868 is a medium-severity vulnerability in Openvpn Openvpn Access Server with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-93.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 5% (91st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-93
Affected product: Openvpn Openvpn Access Server
Published: 2017-05-26
Last modified: 2026-06-17

Description

CRLF injection vulnerability in the web interface in OpenVPN Access Server 2.1.4 allows remote attackers to inject arbitrary HTTP headers and consequently conduct session fixation attacks and possibly HTTP response splitting attacks via "%0A" characters in the PATH_INFO to __session_start__/.

Frequently asked questions

What is CVE-2017-5868?: CRLF injection vulnerability in the web interface in OpenVPN Access Server 2.1.4 allows remote attackers to inject arbitrary HTTP headers and consequently conduct session fixation attacks and possibly HTTP response splitting attacks via "%0A" characters in the PATH_INFO to __session_start__/.
How severe is CVE-2017-5868?: CVE-2017-5868 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2017-5868 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-5868?: CVE-2017-5868 affects Openvpn Openvpn Access Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-5868?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-5868 published?: CVE-2017-5868 was published on 2017-05-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:openvpn:openvpn_access_server:2.1.4:*:*:*:*:*:*:*

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