RealTerm Serial Terminal 2.0.0.70 Denial of Service via Port Field
Priority MEDIUM 63CWE-1260Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00228 13th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2019-25570
- 2026-10-03 Alias added: GHSA-8m9x-gfww-f5vw
References
Exploit 1
More Realterm vulnerabilities
- TI-2019-15732 RealTerm Serial Terminal 2.0.0.70 Buffer Overflow SEH CVSS 4.0HIGH 8.5
- TI-2019-15622 RealTerm Serial Terminal 2.0.0.70 SEH Overflow Crash CVSS 4.0MEDIUM 6.9
Sources
- CVE-2019-25570 · CVE Program
- CVE-2019-25570 · NVD
- FIRST EPSS
- GHSA-8m9x-gfww-f5vw · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences