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Fencer Vulns
high 7.5

CVE-2017-13099 in the critical feed json

wolfSSL Bleichenbacher/ROBOT

published 2017-12-13 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-4616

cvss
7.5
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
27.4%
EPSS 27.4% chance of exploitation in 30 days, percentile 98%
public exploits
1
Metasploit

Summary

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."

Patch / fix

  • wolfssl wolfssl 3.12.2
  • arubanetworks instant 6.5.4.6
  • siemens scalance_w1750d_firmware 8.3.0.1
  • wolfssl Debian 13, Debian 12 3.13.0+dfsg-1

debian advisories DEBIAN-CVE-2017-13099

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-18-282-02 updated cvss 5.9

ICSA-18-282-02 Siemens SCALANCE W1750D

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

Timeline

  1. First public exploit (Metasploit auxiliary/scanner/ssl/bleichenbacher_oracle)
  2. Published

Exploit prediction

27.38% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

CVSS scores

assigned by version score vector
CNA 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 3.0 5.9 CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:P/I:N/A:N

Affected products

  • wolfSSL wolfSSL

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.