CVE-2026-72603

CRITICALPre-NVD 9.99.9—
EchelonGraph scoreMEDIUM confidence

Score 9.9 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-11. A secondary CVSS source baseline 9.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
9.9EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2.2%CVSS: 9.9Exploit: None knownExposed services: Not assessed

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

An OS command injection vulnerability in wg-easy 15.3.0 allows users with the clients.create permission to execute arbitrary commands as root by injecting newline-delimited WireGuard PostUp directives into the client name field. The client name is written to the WireGuard configuration file without neutralizing newline characters, allowing injection of arbitrary directives that are executed by wg-quick with root privileges. An attacker with clients.create permission achieves root code execution on the host.

CVSS v3
9.9
EG Score
9.9CRITICALmedium confidence
EG Risk
45
EG Risk 45/100CISA SSVC

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
Severity99% × 45%
Exploitation2% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
2.2%
EPSS %ILE
82nd
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 11, 2026

Last Modified

August 28, 2026

Advisory Details (1)

Auto-updated Oct 9, 2026
No fix on record yet.
generic

GitHub - wg-easy/wg-easy: The easiest way to run WireGuard VPN + Web-based Admin UI. · GitHub

https://github.com/wg-easy/wg-easy

Vendor Advisories for CVE-2026-72603(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 20× in last 7d / 139× 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 354 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-72603?
CVE-2026-72603 is a critical vulnerability published on August 11, 2026. An OS command injection vulnerability in wg-easy 15.3.0 allows users with the clients.create permission to execute arbitrary commands as root by injecting newline-delimited WireGuard PostUp directives into the client name field. The client name is written to the WireGuard configuration file without…
When was CVE-2026-72603 disclosed?
CVE-2026-72603 was first published on August 11, 2026, with the most recent update on August 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-72603 actively exploited?
CVE-2026-72603 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.2% probability of exploitation in the next 30 days (82nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-72603?
CVE-2026-72603 has a CVSS base score of 9.9 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-72603?
No fix for CVE-2026-72603 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-72603 are linked in the Vendor Advisories panel on this page.

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