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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.

PUBLISHED Reserved 2026-03-21 | Published 2026-03-21 | Updated 2026-03-24 | Assigner VulnCheck




MEDIUM: 6.8CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
MEDIUM: 5.5CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Problem types

Improper Handling of Overlap Between Protected Memory Ranges

Product status

2.0.0.70
affected

Credits

Alejandra Sánchez finder

References

www.exploit-db.com/exploits/46390 (ExploitDB-46390) exploit

realterm.sourceforge.io/ (Official Product Homepage) product

sourceforge.net/projects/realterm/files/ (Product Reference) product

www.vulncheck.com/...rminal-denial-of-service-via-port-field (VulnCheck Advisory: RealTerm Serial Terminal 2.0.0.70 Denial of Service via Port Field) third-party-advisory

cve.org (CVE-2019-25570)

nvd.nist.gov (CVE-2019-25570)

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