VULNERABILITY INTELLIGENCE

CVE-2019-19945

CVSS score7.5 HIGH

EPSS probability1.55%

CISA KEVNot currently listed

Published2020-03-16

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

uhttpd in OpenWrt through 18.06.5 and 19.x through 19.07.0-rc2 has an integer signedness error. This leads to out-of-bounds access to a heap buffer and a subsequent crash. It can be triggered with an HTTP POST request to a CGI script, specifying both "Transfer-Encoding: chunked" and a large negative Content-Length value.

Weakness classification

CWE-125: Out-of-bounds Read
CWE-681: Incorrect Conversion between Numeric Types

Primary references

cve@mitre.org — Patch, Third Party Advisory
cve@mitre.org — Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory