CVE-2022-37660

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-02-11 · updated 2026-07-14
Weakness: CWE-323

Description

In hostapd 2.10 and earlier, the PKEX code remains active even after a successful PKEX association. An attacker that successfully bootstrapped public keys with another entity using PKEX in the past, will be able to subvert a future bootstrapping by passively observing public keys, re-using the encrypting element Qi and subtracting it from the captured message M (X = M - Qi). This will result in the public ephemeral key X; the only element required to subvert the PKEX association.

Affected products

w1.fi hostapd: through 2.10

References

https://link.springer.com/article/10.1007/s10207-025-00988-3
https://w1.fi/cgit/hostap/commit/?id=15af83cf1846870873a011ed4d714732f01cd2e4
https://lists.debian.org/debian-lts-announce/2025/04/msg00019.html
https://cert-portal.siemens.com/productcert/html/ssa-585531.html

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