CVE-2021-40540

PoC —

CVSS 3.1

9.8 critical

EPSS

3%p85

Published

Sep 7, 2021 (Sep 7, 2021)

Modified

Jun 17, 2026

Description

ulfius_uri_logger in Ulfius HTTP Framework before 2.7.4 omits con_info initialization and a con_info->request NULL check for certain malformed HTTP requests.

Vendors: ulfius project
Products: ulfius
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (2.6%)

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