CVE-2018-25259

HIGHNVD 8.48.4—
EchelonGraph scoreMEDIUM confidence

Score 8.4 from GitHub Security Advisory (severity: HIGH) published 2026-04-22. NVD baseline CVSS 8.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
8.4
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.4Exploit: NoneExposed: 0

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

Terminal Services Manager 3.1 contains a stack-based buffer overflow vulnerability in the computer names field that allows local attackers to execute arbitrary code by triggering structured exception handling. Attackers can craft a malicious input file with shellcode and jump instructions that overwrite the SEH handler pointer to execute calc.exe or other payloads when imported through the add computers wizard.

CVSS v3
8.4
EG Score
8.4(medium)
EPSS
8.8%
KEV
Not listed

Published

April 22, 2026

Last Modified

April 29, 2026

Advisory Details (3)

Auto-updated Apr 29, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

Terminal Services Manager 3.1 Buffer Overflow SEH | Advisories | VulnCheck

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

Terminal Services Manager 3.1 - Local Buffer Overflow (SEH) - Windows_x86 local Exploit

https://www.exploit-db.com/exploits/46058
generic

Terminal Services Manager, Remote Desktop Audit, Remote Process Explorer, Wi-Fi Scanner, Network Scanner, Find MAC Address, LanSend, Remote Shutdown, Change MAC Address - network monitoring tools by LizardSystems

https://lizardsystems.com

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 47× 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 159 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2018-25259?
CVE-2018-25259 is a high vulnerability published on April 22, 2026. Terminal Services Manager 3.1 contains a stack-based buffer overflow vulnerability in the computer names field that allows local attackers to execute arbitrary code by triggering structured exception handling. Attackers can craft a malicious input file with shellcode and jump instructions that…
When was CVE-2018-25259 disclosed?
CVE-2018-25259 was first published in the National Vulnerability Database on April 22, 2026, with the most recent update on April 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-25259 actively exploited?
CVE-2018-25259 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 8.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2018-25259?
CVE-2018-25259 has a CVSS v3 base score of 8.4 (NVD).
How do I remediate CVE-2018-25259?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-25259, 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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