CRITICAL

CVE-2026-27613

CVSS v3

9.8

CRITICAL

EPSS Score

1.4 %

exploit probability, as of 2026-09-25

CISA KEV

known exploited

Exploitation

—

SSVC status

Description

TinyWeb is a web server (HTTP, HTTPS) written in Delphi for Win32. A vulnerability in versions prior to 2.01 allows unauthenticated remote attackers to bypass the web server's CGI parameter security controls. Depending on the server configuration and the specific CGI executable in use, the impact is either source code disclosure or remote code execution (RCE). Anyone hosting CGI scripts (particularly interpreted languages like PHP) using vulnerable versions of TinyWeb is impacted. The problem ha

Technical details

Published: 2026-02-25
Last Modified: 2026-03-04

Frequently asked questions

What is CVE-2026-27613?

Is CVE-2026-27613 actively exploited?

Active exploitation of CVE-2026-27613 has not been confirmed. Its EPSS score was 1.4% on 2026-09-25, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-27613?

CVE-2026-27613 has a CVSS v3 base score of 9.8 (CRITICAL severity).

Is CVE-2026-27613 affecting your environment?

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