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 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.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://realterm.sourceforge.io/	Product
https://sourceforge.net/projects/realterm/files/	Product
https://www.exploit-db.com/exploits/46441	Exploit VDB Entry
https://www.vulncheck.com/advisories/realterm-serial-terminal-buffer-overflow-seh	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:crun:realterm:2.0.0.70:*:*:*:*:*:*:*

History

20 Apr 2026, 17:48

Type	Values Removed	Values Added
First Time		Crun realterm Crun
CPE		cpe:2.3:a:crun:realterm:2.0.0.70:::::::*
References	~~() https://realterm.sourceforge.io/ -~~	() https://realterm.sourceforge.io/ - Product
References	~~() https://sourceforge.net/projects/realterm/files/ -~~	() https://sourceforge.net/projects/realterm/files/ - Product
References	~~() https://www.exploit-db.com/exploits/46441 -~~	() https://www.exploit-db.com/exploits/46441 - Exploit, VDB Entry
References	~~() https://www.vulncheck.com/advisories/realterm-serial-terminal-buffer-overflow-seh -~~	() https://www.vulncheck.com/advisories/realterm-serial-terminal-buffer-overflow-seh - Third Party Advisory

05 Apr 2026, 21:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-05 21:16

Updated : 2026-04-20 17:48

NVD link : CVE-2019-25679

Mitre link : CVE-2019-25679

CVE.ORG link : CVE-2019-25679

JSON object : View

Products Affected

crun

realterm

CWE

CWE-787

Out-of-bounds Write

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