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Fencer Vulns
high 7.5

CVE-2016-10743 json

hostapd before 2.6 does not prevent use of the low-quality PRNG that is reached by an os_random() function call.

published 2019-03-23 7 y ago modified 2026-06-17 4 mo ago also EUVD-2016-1740

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.4%
EPSS 2.4% chance of exploitation in 30 days, percentile 83%
public exploits
0
none known

Summary

hostapd before 2.6 does not prevent use of the low-quality PRNG that is reached by an os_random() function call.

Patch / fix

  • w1.fi hostapd 2.6
  • wpa Debian 14, Debian 13, Debian 12 2:2.6-7

debian advisories DEBIAN-CVE-2016-10743

  • wpa Ubuntu 14.04 LTS 2.1-0ubuntu1.7
  • wpa Ubuntu 16.04 LTS 2.4-0ubuntu6.4

ubuntu advisories UBUNTU-CVE-2016-10743

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

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

red hat product security vex CVE-2016-10743 updated cvss 7.5

hostapd: Not preventig the use of low quality PRNG leads to insufficient entropy

  • Red Hat Enterprise Linux 5 wpa_supplicant Red Hat Enterprise Linux 6 wpa_supplicant
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.37% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:P/A:N

Classification

Weakness
  • CWE-332 Insufficient Entropy in PRNG

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.