CVE-2019-25570
CVE-2019-25570 is a medium-severity vulnerability in Crun Realterm with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1260.
Key facts
- Severity: Medium (CVSS 3.x base score 5.5)
- CVSS v4: 6.8
- EPSS exploit prediction: 0% (12th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2019-19888
- Weakness: CWE-1260
- Affected product: Crun Realterm
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2019-25570?
- 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.
- How severe is CVE-2019-25570?
- CVE-2019-25570 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2019-25570 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2019-25570?
- CVE-2019-25570 affects Crun Realterm. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2019-25570?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2019-25570 have an EU (EUVD) identifier?
- Yes. CVE-2019-25570 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2019-19888.
- When was CVE-2019-25570 published?
- CVE-2019-25570 was published on 2026-03-21 and last updated on 2026-06-17.
References
- https://realterm.sourceforge.io/
- https://sourceforge.net/projects/realterm/files/
- https://www.exploit-db.com/exploits/46390
- https://www.vulncheck.com/advisories/realterm-serial-terminal-denial-of-service-via-port-field
Affected products (1)
- cpe:2.3:a:crun:realterm:2.0.0.70:*:*:*:*:*:*:*
More vulnerabilities in Crun Realterm
- CVE-2019-25679 — High (CVSS 7.8): RealTerm Serial Terminal 2.0.0.70 contains a structured exception handling (SEH) buffer overflow vulnerability in the…
- CVE-2019-25569 — Medium (CVSS 6.2): RealTerm Serial Terminal 2.0.0.70 contains a stack-based buffer overflow vulnerability in the Echo Port field that…
All CVEs affecting Crun Realterm →
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