CVE-2019-25570

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-03-21. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity55% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
13%
KEV
Not listed

Published

March 21, 2026

Last Modified

June 17, 2026

Advisory Details (4)

Auto-updated Aug 6, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

RealTerm Serial Terminal 2.0.0.70 Denial of Service via Port Field | Advisories | VulnCheck

https://www.vulncheck.com/advisories/realterm-serial-terminal-denial-of-service-via-port-field
generic🟡 PoC Available

Realterm Serial Terminal 2.0.0.70 - Denial of Service - Windows dos Exploit

https://www.exploit-db.com/exploits/46390
generic

RealTerm: Serial/TCP Terminal - Browse Files at SourceForge.net

https://sourceforge.net/projects/realterm/files/
generic

Terminal Software

https://realterm.sourceforge.io/

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 6× in last 7d / 23× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-18 19:22 UTCEPSS rescore
  2. 2026-09-17 19:22 UTCEPSS rescore
  3. 2026-09-16 14:04 UTCEPSS rescore
  4. 2026-09-15 03:05 UTCEPSS rescore
  5. 2026-09-13 16:42 UTCEPSS rescore
  6. 2026-09-12 14:56 UTCEPSS rescore
  7. 2026-09-11 14:48 UTCEPSS rescore
  8. 2026-09-11 09:32 UTCEPSS rescore
  9. 2026-09-07 15:57 UTCEPSS rescore
  10. 2026-09-06 13:44 UTCEPSS rescore
  11. 2026-09-05 15:24 UTCEPSS rescore
  12. 2026-09-04 13:56 UTCEPSS rescore
  13. 2026-09-02 14:07 UTCEPSS rescore
  14. 2026-09-01 03:32 UTCEPSS rescore
  15. 2026-08-30 19:13 UTCEPSS rescore
  16. 2026-08-30 01:18 UTCEPSS rescore
  17. 2026-08-28 21:36 UTCEPSS rescore
  18. 2026-08-27 14:21 UTCEPSS rescore
  19. 2026-08-26 14:42 UTCEPSS rescore
  20. 2026-08-25 13:45 UTCEPSS rescore
  21. 2026-08-24 14:11 UTCEPSS rescore
  22. 2026-08-21 23:45 UTCEPSS rescore
  23. 2026-08-20 22:51 UTCEPSS rescore
  24. 2026-08-19 17:00 UTCEPSS rescore
  25. 2026-08-18 13:44 UTCEPSS rescore
Show 38 more
  1. 2026-08-17 13:43 UTCEPSS rescore
  2. 2026-08-16 14:52 UTCEPSS rescore
  3. 2026-08-16 10:53 UTCEG score recompute
  4. 2026-08-16 10:53 UTCGHSA enrichment
  5. 2026-08-16 02:10 UTCEPSS rescore
  6. 2026-08-15 01:26 UTCEPSS rescore
  7. 2026-08-14 07:04 UTCEG score recompute
  8. 2026-08-14 07:04 UTCGHSA enrichment
  9. 2026-08-12 21:45 UTCEG score recompute
  10. 2026-08-12 21:45 UTCGHSA enrichment
  11. 2026-08-12 13:47 UTCEPSS rescore
  12. 2026-08-11 09:13 UTCEG score recompute
  13. 2026-08-11 09:13 UTCGHSA enrichment
  14. 2026-08-10 07:54 UTCEG score recompute
  15. 2026-08-10 07:54 UTCGHSA enrichment
  16. 2026-08-09 13:43 UTCEPSS rescore
  17. 2026-08-09 06:39 UTCEG score recompute
  18. 2026-08-09 06:39 UTCGHSA enrichment
  19. 2026-08-08 16:33 UTCEPSS rescore
  20. 2026-08-07 17:03 UTCEG score recompute
  21. 2026-08-07 17:03 UTCGHSA enrichment
  22. 2026-08-07 16:23 UTCEPSS rescore
  23. 2026-08-06 13:43 UTCEPSS rescore
  24. 2026-08-06 01:21 UTCEG score recompute
  25. 2026-08-06 01:21 UTCGHSA enrichment
  26. 2026-08-05 19:13 UTCEPSS rescore
  27. 2026-08-04 15:05 UTCEPSS rescore
  28. 2026-08-04 00:30 UTCEG score recompute
  29. 2026-08-04 00:30 UTCGHSA enrichment
  30. 2026-08-02 16:00 UTCEG score recompute
  31. 2026-08-02 16:00 UTCGHSA enrichment
  32. 2026-08-02 02:23 UTCEPSS rescore
  33. 2026-08-01 04:12 UTCEPSS rescore
  34. 2026-07-30 16:24 UTCEPSS rescore
  35. 2026-07-30 01:27 UTCEPSS rescore
  36. 2026-07-28 15:32 UTCEPSS rescore
  37. 2026-07-27 14:33 UTCEG score recompute
  38. 2026-07-27 14:33 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2019-25570?
CVE-2019-25570 is a medium vulnerability published on March 21, 2026. 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…
When was CVE-2019-25570 disclosed?
CVE-2019-25570 was first published in the National Vulnerability Database on March 21, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2019-25570 actively exploited?
CVE-2019-25570 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 87.3% of all scored CVEs.
What is the CVSS score of CVE-2019-25570?
CVE-2019-25570 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2019-25570?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-25570, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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