CVE-2019-25679

HIGH 7.8

RealTerm Serial Terminal 2.0.0.70 Buffer Overflow SEH

CVSS Score

7.8

EPSS Score

0.0%

EPSS Percentile

2th

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.

CWE	CWE-787
Vendor	realterm
Product	realterm: serial terminal
Published	Apr 5, 2026
Last Updated	Apr 6, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

Realterm / RealTerm: Serial Terminal

1.11.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

exploit-db.com: https://www.exploit-db.com/exploits/46441 realterm.sourceforge.io: https://realterm.sourceforge.io/ sourceforge.net: https://sourceforge.net/projects/realterm/files/ vulncheck.com: https://www.vulncheck.com/advisories/realterm-serial-terminal-buffer-overflow-seh

Credits

Matteo Malvica