CVE-2017-8855
wolfSSL before 3.11.0 does not prevent wc_DhAgree from accepting a malformed DH key.
wolfSSL before 3.11.0 does not prevent wc_DhAgree from accepting a malformed DH key.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
wolfSSL before 3.11.0 does not prevent wc_DhAgree from accepting a malformed DH key.
- Record
CVE-2017-8855- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:P/A:N - Updated
- 2026-11-02
CVE List No score
wolfSSL before 3.11.0 does not prevent wc_DhAgree from accepting a malformed DH key.
- Record
CVE-2017-8855- Updated
- 2026-11-02
EUVDEUVD-2017-17797 No score
wolfSSL before 3.11.0 does not prevent wc_DhAgree from accepting a malformed DH key.
- Record
EUVD-2017-17797- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-9pgp-f7j2-6cwq
wolfSSL before 3.11.0 does not prevent wc_DhAgree from accepting a malformed DH key.
wolfSSL before 3.11.0 does not prevent wc_DhAgree from accepting a malformed DH key.
- Record
GHSA-9pgp-f7j2-6cwq- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
OSV
wolfSSL before 3.11.0 does not prevent wc_DhAgree from accepting a malformed DH key.
- Record
CVE-2017-8855- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
OSVDEBIAN-CVE-2017-8855
wolfSSL before 3.11.0 does not prevent wc_DhAgree from accepting a malformed DH key.
- Record
DEBIAN-CVE-2017-8855- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
OSVUBUNTU-CVE-2017-8855
wolfSSL before 3.11.0 does not prevent wc_DhAgree from accepting a malformed DH key.
- Record
UBUNTU-CVE-2017-8855- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
Affected products
Affected packages
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2017-8855 is a high vulnerability (CVSS 7.5) in Wolfssl, published May 9, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.12%, the 66th percentile. Fixed in wolfssl 3.12.0+dfsg-1.