# CVE-2019-25570

## Summary

- **CVE ID:** CVE-2019-25570
- **Severity:** MEDIUM
- **CVSS Score:** 6.8 (CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N)
- **CWE:** CWE-1260
- **Published:** Mar 21, 2026
- **Last Modified:** Mar 24, 2026

## 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.

## Affected Products

- Realterm — RealTerm: Serial Terminal (2.0.0.70)

## References

- [CNA](https://www.exploit-db.com/exploits/46390)
- [CNA](https://realterm.sourceforge.io/)
- [CNA](https://sourceforge.net/projects/realterm/files/)
- [CNA](https://www.vulncheck.com/advisories/realterm-serial-terminal-denial-of-service-via-port-field)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.22%
- **EPSS Percentile:** 12.3

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._