CVE-2026-27671

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-06-09. the CNA's CVSS baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:sap, epss, ghsa
Trending — 3 sources updated this week
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 9.8Exploit: NoneExposed: 0

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

Due to improper RFC protocol validation in the SAP Kernel used by the Application Server ABAP of SAP NetWeaver and ABAP Platform, an unauthenticated attacker can send a crafted RFC request that exploits logical errors in memory management, leading to memory corruption. This could lead to a high impact on the confidentiality, integrity, and availability of the application.

CVSS v3
9.8
EG Score
9.8(high)
EPSS
35.1%
KEV
Not listed

Published

June 9, 2026

Last Modified

June 9, 2026

Advisory Details (2)

Auto-updated Jun 20, 2026
No patch confirmed yet.
generic

SAP Security Notes & News

https://url.sap/sapsecuritypatchday
generic
https://me.sap.com/notes/3717897

Vendor Advisories for CVE-2026-27671(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 61× in last 7d / 310× 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 310 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-27671?
CVE-2026-27671 is a critical vulnerability published on June 9, 2026. Due to improper RFC protocol validation in the SAP Kernel used by the Application Server ABAP of SAP NetWeaver and ABAP Platform, an unauthenticated attacker can send a crafted RFC request that exploits logical errors in memory management, leading to memory corruption. This could lead to a high…
When was CVE-2026-27671 disclosed?
CVE-2026-27671 was first published in the National Vulnerability Database on June 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-27671 actively exploited?
CVE-2026-27671 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 35.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-27671?
CVE-2026-27671 has a CVSS v4.0 base score of 9.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-27671?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-27671, 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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