What is CVE-2019-25679?

CVE-2019-25679 is a high-severity vulnerability in Realterm Realterm: Serial Terminal, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2026-04-05.

How severe is CVE-2019-25679?

High severity. CVSS v3 base score is 7.8 out of 10.

Buffer overflow in Realterm Realterm: Serial Terminal

CVE-2019-25679

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…

Vulnerability class: Buffer Overflow

EPSS: 0.000 (1.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Realterm Realterm: Serial Terminal — versions 1.11.2

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

ExploitDB-46441 (exploit)
Official Product Homepage (product)
Product Reference (product)
VulnCheck Advisory: RealTerm Serial Terminal 2.0.0.70 Buffer Overflow SEH (third-party-advisory)

Frequently asked questions

What is CVE-2019-25679?: CVE-2019-25679 is a high-severity vulnerability in Realterm Realterm: Serial Terminal, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2026-04-05.
How severe is CVE-2019-25679?: High severity. CVSS v3 base score is 7.8 out of 10.