CVE-2019-25679CWE-787

RealTerm Serial Terminal 2.0.0.70 Buffer Overflow SEH

High · published April 5, 2026

CVSS v4.0
8.5
EPSS
0%
Percentile
23.1
In the wild
Unconfirmed
What it is

RealTerm Serial Terminal 2.0.0.70 contains a structured exception handling (SEH) buffer overflow vulnerability in the Echo Port tab that allows local attackers to execute arbitrary code by supplying a malicious payload. Attackers can craft a buffer overflow payload with a POP POP RET gadget chain and shellcode that triggers code execution when pasted into the Port field and the Change button is clicked.

The record
Technical detail
CVSS v4.0
8.5 · HIGH
Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00314 · 23.1th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2026-04-05T20:45Z
EPSS history
Timeline
  • 05 APR 20:45Z
    RealTerm Serial Terminal 2.0.0.70 Buffer Overflow SEH
    cvelistv5