How severe is CVE-2017-8855?

CVE-2017-8855 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2017-8855 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-8855?

CVE-2017-8855 affects Wolfssl. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-8855?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2017-8855 published?

CVE-2017-8855 was published on 2017-05-09 and last updated on 2026-06-17.

CVE-2017-8855

CVE-2017-8855 is a high-severity vulnerability in Wolfssl with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Wolfssl
Published: 2017-05-09
Last modified: 2026-06-17

Description

wolfSSL before 3.11.0 does not prevent wc_DhAgree from accepting a malformed DH key.

Frequently asked questions

What is CVE-2017-8855?: wolfSSL before 3.11.0 does not prevent wc_DhAgree from accepting a malformed DH key.
How severe is CVE-2017-8855?: CVE-2017-8855 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2017-8855 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-8855?: CVE-2017-8855 affects Wolfssl. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-8855?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2017-8855 published?: CVE-2017-8855 was published on 2017-05-09 and last updated on 2026-06-17.

References

https://github.com/wolfSSL/wolfssl/releases/tag/v3.11.0-stable

Affected products (1)

cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:*

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