CVE-2019-25679

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-04-05. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: Elevated riskExposed: 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 structured exception handling (SEH) buffer overflow vulnerability in the Echo Port tab that allows local attackers to execute arbitrary code by supplying a malicious payload. Attackers can craft a buffer overflow payload with a POP POP RET gadget chain and shellcode that triggers code execution when pasted into the Port field and the Change button is clicked.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
51(Track*)
EG Risk 51/100SSVC: 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
Severity78% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
0%
EPSS %ILE
24%
KEV
Not listed

Published

April 5, 2026

Last Modified

July 24, 2026

Advisory Details (4)

Auto-updated Jun 11, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

RealTerm Serial Terminal 2.0.0.70 Buffer Overflow SEH | Advisories | VulnCheck

https://www.vulncheck.com/advisories/realterm-serial-terminal-buffer-overflow-seh
generic🟡 PoC Available

RealTerm Serial Terminal 2.0.0.70 - 'Echo Port' Buffer Overflow (SEH) - Windows local Exploit

https://www.exploit-db.com/exploits/46441
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 5× in last 7d / 25× 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.

Showing the most recent 100 of 211 total refreshes for this CVE.

  1. 2026-09-15 03:05 UTCEPSS rescore
  2. 2026-09-13 16:42 UTCEPSS rescore
  3. 2026-09-12 14:56 UTCEPSS rescore
  4. 2026-09-11 14:48 UTCEPSS rescore
  5. 2026-09-11 09:32 UTCEPSS rescore
  6. 2026-09-06 13:44 UTCEPSS rescore
  7. 2026-09-05 15:24 UTCEPSS rescore
  8. 2026-09-04 13:56 UTCEPSS rescore
  9. 2026-09-02 14:07 UTCEPSS rescore
  10. 2026-09-01 03:32 UTCEPSS rescore
  11. 2026-08-30 19:13 UTCEPSS rescore
  12. 2026-08-30 01:18 UTCEPSS rescore
  13. 2026-08-28 21:36 UTCEPSS rescore
  14. 2026-08-27 14:21 UTCEPSS rescore
  15. 2026-08-26 14:42 UTCEPSS rescore
  16. 2026-08-25 13:45 UTCEPSS rescore
  17. 2026-08-24 14:11 UTCEPSS rescore
  18. 2026-08-21 23:45 UTCEPSS rescore
  19. 2026-08-20 22:51 UTCEPSS rescore
  20. 2026-08-19 17:00 UTCEPSS rescore
  21. 2026-08-18 13:44 UTCEPSS rescore
  22. 2026-08-17 13:43 UTCEPSS rescore
  23. 2026-08-16 14:52 UTCEPSS rescore
  24. 2026-08-16 08:28 UTCEG score recompute
  25. 2026-08-16 08:28 UTCGHSA enrichment
Show 75 more
  1. 2026-08-16 02:10 UTCEPSS rescore
  2. 2026-08-15 01:26 UTCEPSS rescore
  3. 2026-08-14 18:48 UTCGHSA enrichment
  4. 2026-08-14 05:36 UTCEG score recompute
  5. 2026-08-14 05:36 UTCGHSA enrichment
  6. 2026-08-13 09:46 UTCGHSA enrichment
  7. 2026-08-12 19:51 UTCEG score recompute
  8. 2026-08-12 19:51 UTCGHSA enrichment
  9. 2026-08-12 13:47 UTCEPSS rescore
  10. 2026-08-11 20:12 UTCEG score recompute
  11. 2026-08-11 20:11 UTCGHSA enrichment
  12. 2026-08-11 03:21 UTCEG score recompute
  13. 2026-08-11 03:21 UTCGHSA enrichment
  14. 2026-08-10 05:54 UTCGHSA enrichment
  15. 2026-08-09 17:31 UTCEG score recompute
  16. 2026-08-09 17:31 UTCGHSA enrichment
  17. 2026-08-09 13:43 UTCEPSS rescore
  18. 2026-08-09 05:07 UTCGHSA enrichment
  19. 2026-08-08 03:36 UTCEG score recompute
  20. 2026-08-08 03:36 UTCGHSA enrichment
  21. 2026-08-07 16:23 UTCEPSS rescore
  22. 2026-08-07 15:13 UTCEG score recompute
  23. 2026-08-07 15:13 UTCGHSA enrichment
  24. 2026-08-06 13:43 UTCEPSS rescore
  25. 2026-08-06 13:05 UTCGHSA enrichment
  26. 2026-08-06 00:11 UTCEG score recompute
  27. 2026-08-06 00:11 UTCGHSA enrichment
  28. 2026-08-05 19:13 UTCEPSS rescore
  29. 2026-08-04 15:05 UTCEPSS rescore
  30. 2026-08-03 22:32 UTCEG score recompute
  31. 2026-08-03 22:32 UTCGHSA enrichment
  32. 2026-08-03 02:56 UTCGHSA enrichment
  33. 2026-08-02 14:29 UTCEG score recompute
  34. 2026-08-02 14:29 UTCGHSA enrichment
  35. 2026-08-02 02:23 UTCEPSS rescore
  36. 2026-08-01 04:12 UTCEPSS rescore
  37. 2026-07-30 16:24 UTCEPSS rescore
  38. 2026-07-30 01:27 UTCEPSS rescore
  39. 2026-07-28 15:32 UTCEPSS rescore
  40. 2026-07-26 14:51 UTCEPSS rescore
  41. 2026-07-26 09:06 UTCEG score recompute
  42. 2026-07-26 09:06 UTCGHSA enrichment
  43. 2026-07-25 14:14 UTCEPSS rescore
  44. 2026-07-24 14:14 UTCEPSS rescore
  45. 2026-07-24 14:14 UTCEPSS rescore
  46. 2026-07-23 14:15 UTCEPSS rescore
  47. 2026-07-23 01:44 UTCEG score recompute
  48. 2026-07-22 22:25 UTCEG score recompute
  49. 2026-07-22 14:05 UTCEPSS rescore
  50. 2026-07-21 15:22 UTCEPSS rescore
  51. 2026-07-21 15:22 UTCEPSS rescore
  52. 2026-07-20 17:04 UTCEPSS rescore
  53. 2026-07-20 17:04 UTCEPSS rescore
  54. 2026-07-19 14:28 UTCEPSS rescore
  55. 2026-07-19 14:28 UTCEPSS rescore
  56. 2026-07-19 02:26 UTCEPSS rescore
  57. 2026-07-19 02:26 UTCEPSS rescore
  58. 2026-07-18 10:01 UTCEPSS rescore
  59. 2026-07-16 16:59 UTCEPSS rescore
  60. 2026-07-16 16:59 UTCEPSS rescore
  61. 2026-07-15 16:55 UTCEPSS rescore
  62. 2026-07-15 16:55 UTCEPSS rescore
  63. 2026-07-13 22:27 UTCEPSS rescore
  64. 2026-07-13 06:10 UTCEPSS rescore
  65. 2026-07-13 06:10 UTCEPSS rescore
  66. 2026-07-12 05:43 UTCEPSS rescore
  67. 2026-07-12 05:43 UTCEPSS rescore
  68. 2026-07-11 08:24 UTCEPSS rescore
  69. 2026-07-11 08:24 UTCEPSS rescore
  70. 2026-07-09 19:06 UTCEPSS rescore
  71. 2026-07-08 15:11 UTCEPSS rescore
  72. 2026-07-07 13:43 UTCEPSS rescore
  73. 2026-07-06 16:25 UTCEPSS rescore
  74. 2026-07-06 16:25 UTCEPSS rescore
  75. 2026-07-06 02:20 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2019-25679?
CVE-2019-25679 is a high vulnerability published on April 5, 2026. RealTerm Serial Terminal 2.0.0.70 contains a structured exception handling (SEH) buffer overflow vulnerability in the Echo Port tab that allows local attackers to execute arbitrary code by supplying a malicious payload. Attackers can craft a buffer overflow payload with a POP POP RET gadget chain…
When was CVE-2019-25679 disclosed?
CVE-2019-25679 was first published in the National Vulnerability Database on April 5, 2026, with the most recent update on July 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2019-25679 actively exploited?
CVE-2019-25679 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 75.8% of all scored CVEs.
What is the CVSS score of CVE-2019-25679?
CVE-2019-25679 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2019-25679?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-25679, 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.

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