CVE-2019-25570

MEDIUM

RealTerm Serial Terminal 2.0.0.70 Denial of Service via Port Field

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2019-25570. PoCs published by Alejandra Sánchez.

AI-analyzed exploit summary This PoC exploits a buffer overflow vulnerability in RealTerm: Serial Terminal 2.0.0.70 by sending a large string (1000 'A' characters) to the 'Port' field, causing a denial of service (DoS) when the application crashes.

Description

RealTerm Serial Terminal 2.0.0.70 contains a denial of service vulnerability that allows local attackers to crash the application by supplying an excessively long string in the Port field. Attackers can paste a buffer of 1000 characters into the Port input field and click the open button to trigger a crash.

Exploits (1)

exploitdb WORKING POC
by Alejandra Sánchez · pythondoswindows
https://www.exploit-db.com/exploits/46390

This PoC exploits a buffer overflow vulnerability in RealTerm: Serial Terminal 2.0.0.70 by sending a large string (1000 'A' characters) to the 'Port' field, causing a denial of service (DoS) when the application crashes.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: RealTerm: Serial Terminal 2.0.0.70
No auth needed
Prerequisites: Python environment · RealTerm application installed
devstral-2 · analyzed Mar 21, 2026 Full analysis →

References (4)

Core 4
Core References
Exploit exploit
ExploitDB-46390
https://www.exploit-db.com/exploits/46390
Product product
Official Product Homepage
https://realterm.sourceforge.io/
Product product
Product Reference
https://sourceforge.net/projects/realterm/files/
Third Party Advisory third-party-advisory
VulnCheck Advisory: RealTerm Serial Terminal 2.0.0.70 Denial of Service via Port Field
https://www.vulncheck.com/advisories/realterm-serial-terminal-denial-of-service-via-port-field

Scores

CVSS v3 5.5
EPSS 0.0022
EPSS Percentile 12.2%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-1260
Status published
Products (2)
crun/realterm 2.0.0.70
Realterm/RealTerm: Serial Terminal 2.0.0.70
Published Mar 21, 2026
Tracked Since Mar 21, 2026