CVE-2018-25258

HIGHNVD 8.48.4—
EchelonGraph scoreMEDIUM confidence

Score 8.4 from GitHub Security Advisory (severity: HIGH) published 2026-04-12. 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.

RGui 3.5.0 contains a local buffer overflow vulnerability in the GUI preferences dialog that allows attackers to bypass DEP protections through structured exception handling exploitation. Attackers can craft malicious input in the Language for menus and messages field to trigger a stack-based buffer overflow, execute a ROP chain for VirtualAlloc allocation, and achieve arbitrary code execution.

CVSS v3
8.4
EG Score
8.4(medium)
EG Risk
54(Track*)
EG Risk 54/100SSVC: 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
Severity84% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS
8.6%
KEV
Not listed

Published

April 12, 2026

Last Modified

April 15, 2026

Advisory Details (3)

Auto-updated Jun 8, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

RGui 3.5.0 Local Buffer Overflow SEH DEP Bypass | Advisories | VulnCheck

https://www.vulncheck.com/advisories/rgui-local-buffer-overflow-seh-dep-bypass
generic

R: The R Project for Statistical Computing

https://www.r-project.org/
generic🟡 PoC Available

RGui 3.5.0 - Local Buffer Overflow (SEH)(DEP Bypass) - Windows local Exploit

https://www.exploit-db.com/exploits/46107

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 46× 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 133 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2018-25258?
CVE-2018-25258 is a high vulnerability published on April 12, 2026. RGui 3.5.0 contains a local buffer overflow vulnerability in the GUI preferences dialog that allows attackers to bypass DEP protections through structured exception handling exploitation. Attackers can craft malicious input in the Language for menus and messages field to trigger a stack-based…
When was CVE-2018-25258 disclosed?
CVE-2018-25258 was first published in the National Vulnerability Database on April 12, 2026, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-25258 actively exploited?
CVE-2018-25258 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 8.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2018-25258?
CVE-2018-25258 has a CVSS v3 base score of 8.4 (NVD).
How do I remediate CVE-2018-25258?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-25258, 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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