CVE-2017-2800
A specially crafted x509 certificate can cause a single out of bounds byte overwrite in wolfSSL through 3.10.2 resulting in potential certificate validation vulnerabilities, denial of service and possible remote code execution.
Does this matter?
A public exploit is published in Exploit-DB and the impact is critical, while EPSS rates exploitation at 8.5%. Anyone can run this; patch or mitigate before the next change window and check exposed instances for signs of use.
Description
A specially crafted x509 certificate can cause a single out of bounds byte overwrite in wolfSSL through 3.10.2 resulting in potential certificate validation vulnerabilities, denial of service and possible remote code execution. In order to trigger this vulnerability, the attacker needs to supply a malicious x509 certificate to either a server or a client application using this library.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 8.53% probability · 95th percentile
- Public exploits
- 1 in Exploit-DB · first 9 May 2017
- CISA KEV
- Not listed
- Weakness
- CWE-295
- Affected
- wolfssl/wolfssl
- Source
- talos-cna@cisco.com
EPSS 8.5% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- https://talosintelligence.com/vulnerability_reports/TALOS-2017-0293Exploit, Third Party Advisory
- https://www.exploit-db.com/exploits/41984/Exploit, Third Party Advisory, VDB Entry
- https://talosintelligence.com/vulnerability_reports/TALOS-2017-0293Exploit, Third Party Advisory
- https://www.exploit-db.com/exploits/41984/Exploit, Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.