CVE-2020-21699

HIGH

Tengine 2.2.2 - Integer Overflow in Range Filter Module

Title source: llm

Description

The web server Tengine 2.2.2 developed in the Nginx version from 0.5.6 thru 1.13.2 is vulnerable to an integer overflow vulnerability in the nginx range filter module, resulting in the leakage of potentially sensitive information triggered by specially crafted requests.

References (1)

Core 1

Core References

Various Sources

https://github.com/ZxDecide/Nginx-variants/blob/master/%E9%99%84%E4%BB%B6%28Tengine%29.docx

View Writeup ZIP pw:eip

Scores

CVSS v3 7.5

EPSS 0.0066

EPSS Percentile 46.8%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-190

Status published

Products (1)

alibaba/tengine 2.2.2

Published Aug 22, 2023

Tracked Since Feb 18, 2026