CVE-2019-25569 MEDIUM

CVE-2019-25569: RealTerm Serial Terminal 2.0.0.70 SEH Overflow Crash

Vendor Realterm
Product RealTerm: Serial Terminal
Weakness CWE-787
Published March 21, 2026
Last update March 23, 2026

CVSS base score

6.9/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

RealTerm Serial Terminal 2.0.0.70 contains a stack-based buffer overflow vulnerability in the Echo Port field that allows local attackers to crash the application by triggering a structured exception handler (SEH) chain corruption. Attackers can craft a malicious input string with 268 bytes of padding followed by SEH overwrite values and paste it into the Port field to cause denial of service.

Key dates

02Disclosure timeline

March 21, 2026 CVE published
March 23, 2026 Record updated