CVE-2017-13099
wolfSSL prior to version 3.12.2 provides a weak Bleichenbacher oracle when any TLS cipher suite using RSA key exchange is negotiated.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 27.4%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
Description
wolfSSL prior to version 3.12.2 provides a weak Bleichenbacher oracle when any TLS cipher suite using RSA key exchange is negotiated. An attacker can recover the private key from a vulnerable wolfSSL application. This vulnerability is referred to as "ROBOT."
- CVSS 3.0
- 5.9 MEDIUMCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 27.38% probability · 98th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-203
- Affected
- wolfssl/wolfssl · siemens/scalance w1750d firmware · arubanetworks/instant
- Source
- cret@cert.org
EPSS moved from 27.4% on 15 October 2026 to 27.4% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2018-002.txtThird Party Advisory
- http://www.kb.cert.org/vuls/id/144389Issue Tracking, Mitigation, Third Party Advisory, US Government Resource
- http://www.securityfocus.com/bid/102174Issue Tracking, Mitigation, Third Party Advisory, VDB Entry
- https://cert-portal.siemens.com/productcert/pdf/ssa-464260.pdfThird Party Advisory
- https://github.com/wolfSSL/wolfssl/pull/1229Issue Tracking, Patch, Third Party Advisory
- https://robotattack.org/Issue Tracking, Third Party Advisory
- http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2018-002.txtThird Party Advisory
- http://www.kb.cert.org/vuls/id/144389Issue Tracking, Mitigation, Third Party Advisory, US Government Resource
- http://www.securityfocus.com/bid/102174Issue Tracking, Mitigation, Third Party Advisory, VDB Entry
- https://cert-portal.siemens.com/productcert/pdf/ssa-464260.pdfThird Party Advisory
- https://github.com/wolfSSL/wolfssl/pull/1229Issue Tracking, Patch, Third Party Advisory
- https://robotattack.org/Issue Tracking, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.