Integer overflow in Maximmasiutin Tinyweb
CVE-2026-28497
TinyWeb is a web server (HTTP, HTTPS) written in Delphi for Win32. Prior to version 2.03, an integer overflow vulnerability in the string-to-integer conversion routine (_Val) allows an unauthenticated remote attacker to bypass Content-Leng…
Vulnerability class: Integer Overflow
EPSS: 0.005 (37.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H.
Affected products
- Maximmasiutin Tinyweb — versions < 2.03
- Ritlabs Tinyweb
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-28497?
- CVE-2026-28497 is a critical-severity vulnerability in Maximmasiutin Tinyweb, classified under Integer Overflow or Wraparound. CVSS score: 9.1/10. Published 2026-03-06.
- How severe is CVE-2026-28497?
- Critical severity. CVSS v3 base score is 9.1 out of 10.