CVE-2026-0257

HIGHPre-NVD 7.89.1▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.1 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2026-05-29), indicating real-world exploitation has been confirmed by US federal agencies. the CNA's CVSS baseline 7.8 retained for reference (NVD's own analysis pending). Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, cna:palo_alto, epss, ghsa
Trending — 4 sources updated this weekExploited in the wild
7.8
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • 2 internet-exposed hosts are running an affected version right now
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 87%CVSS: 7.8Exploit: NoneExposed: 2

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

Authentication bypass vulnerabilities in the GlobalProtect portal and gateway of Palo Alto Networks PAN-OS® software allows the attacker to bypass security restrictions and establish an unauthorized VPN connection.

Panorama and Cloud NGFW are not impacted by these issues.

Live · internet exposure

2 internet-exposed hosts are running an affected version of CVE-2026-0257 right now.

across 2 countries (China, United States)top: pan-os
See the live KEV-Exposure radar →Found passively from public internet-scan data — aggregate, host-redacted.

EchelonGraph is the only CVE feed that fuses live vulnerability intelligence with its own live internet-exposure radar — so you see not just that a CVE is exploited, but how much of the internet is exposed to it right now.

CVSS v3
7.8
EG Score
9.1(high)
EPSS
99.7%
KEV
⚠ Exploited

Published

May 13, 2026

Last Modified

July 14, 2026

Advisory Details (1)

Auto-updated May 29, 2026
No patch confirmed yet.
generic

CVE-2026-0257 PAN-OS: GlobalProtect Authentication Bypass Vulnerabilities

https://security.paloaltonetworks.com/CVE-2026-0257

Vendor Advisories for CVE-2026-0257(2)

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 49× in last 7d / 194× 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 400 total refreshes for this CVE.

  1. 2026-07-22 21:01 UTCGHSA enrichment
  2. 2026-07-22 19:40 UTCCISA KEV update
  3. 2026-07-22 16:40 UTCEG score recompute
  4. 2026-07-22 16:40 UTCGHSA enrichment
  5. 2026-07-22 14:08 UTCEPSS rescore
  6. 2026-07-22 12:18 UTCGHSA enrichment
  7. 2026-07-22 07:57 UTCGHSA enrichment
  8. 2026-07-22 03:35 UTCGHSA enrichment
  9. 2026-07-21 23:14 UTCGHSA enrichment
  10. 2026-07-21 18:14 UTCEG score recompute
  11. 2026-07-21 18:14 UTCGHSA enrichment
  12. 2026-07-21 15:24 UTCEPSS rescore
  13. 2026-07-21 14:37 UTCCISA KEV update
  14. 2026-07-21 13:54 UTCGHSA enrichment
  15. 2026-07-21 09:31 UTCGHSA enrichment
  16. 2026-07-21 05:10 UTCGHSA enrichment
  17. 2026-07-21 00:50 UTCGHSA enrichment
  18. 2026-07-20 20:30 UTCGHSA enrichment
  19. 2026-07-20 16:09 UTCGHSA enrichment
  20. 2026-07-20 11:48 UTCGHSA enrichment
  21. 2026-07-20 07:27 UTCGHSA enrichment
  22. 2026-07-20 03:06 UTCGHSA enrichment
  23. 2026-07-19 22:45 UTCGHSA enrichment
  24. 2026-07-19 18:25 UTCGHSA enrichment
  25. 2026-07-19 14:04 UTCGHSA enrichment
Show 75 more
  1. 2026-07-19 09:44 UTCGHSA enrichment
  2. 2026-07-19 05:24 UTCEG score recompute
  3. 2026-07-19 05:24 UTCGHSA enrichment
  4. 2026-07-19 02:28 UTCEPSS rescore
  5. 2026-07-19 01:03 UTCGHSA enrichment
  6. 2026-07-18 20:42 UTCGHSA enrichment
  7. 2026-07-18 16:21 UTCGHSA enrichment
  8. 2026-07-18 12:00 UTCGHSA enrichment
  9. 2026-07-18 07:39 UTCGHSA enrichment
  10. 2026-07-18 03:17 UTCGHSA enrichment
  11. 2026-07-17 22:56 UTCGHSA enrichment
  12. 2026-07-17 18:35 UTCGHSA enrichment
  13. 2026-07-17 14:14 UTCGHSA enrichment
  14. 2026-07-17 09:53 UTCEG score recompute
  15. 2026-07-17 09:53 UTCGHSA enrichment
  16. 2026-07-17 05:32 UTCGHSA enrichment
  17. 2026-07-17 01:11 UTCGHSA enrichment
  18. 2026-07-16 20:51 UTCGHSA enrichment
  19. 2026-07-16 17:04 UTCCISA KEV update
  20. 2026-07-16 16:30 UTCGHSA enrichment
  21. 2026-07-16 12:06 UTCGHSA enrichment
  22. 2026-07-16 07:46 UTCGHSA enrichment
  23. 2026-07-16 03:26 UTCGHSA enrichment
  24. 2026-07-15 23:06 UTCGHSA enrichment
  25. 2026-07-15 18:45 UTCGHSA enrichment
  26. 2026-07-15 16:57 UTCEPSS rescore
  27. 2026-07-15 16:49 UTCCISA KEV update
  28. 2026-07-15 15:04 UTCCISA KEV update
  29. 2026-07-15 14:24 UTCGHSA enrichment
  30. 2026-07-15 10:03 UTCGHSA enrichment
  31. 2026-07-15 05:41 UTCGHSA enrichment
  32. 2026-07-15 01:21 UTCGHSA enrichment
  33. 2026-07-14 21:00 UTCGHSA enrichment
  34. 2026-07-14 18:05 UTCCISA KEV update
  35. 2026-07-14 16:39 UTCGHSA enrichment
  36. 2026-07-14 13:11 UTCMITRE cvelistV5CVSS v3 → 7.8 · severity → HIGH
  37. 2026-07-14 12:18 UTCGHSA enrichment
  38. 2026-07-14 07:57 UTCGHSA enrichment
  39. 2026-07-14 03:35 UTCGHSA enrichment
  40. 2026-07-13 23:15 UTCGHSA enrichment
  41. 2026-07-13 18:55 UTCGHSA enrichment
  42. 2026-07-13 17:07 UTCCISA KEV update
  43. 2026-07-13 14:34 UTCGHSA enrichment
  44. 2026-07-13 10:13 UTCGHSA enrichment
  45. 2026-07-13 06:12 UTCEPSS rescore
  46. 2026-07-13 05:53 UTCGHSA enrichment
  47. 2026-07-13 01:32 UTCGHSA enrichment
  48. 2026-07-12 21:11 UTCGHSA enrichment
  49. 2026-07-12 16:50 UTCGHSA enrichment
  50. 2026-07-12 12:29 UTCGHSA enrichment
  51. 2026-07-12 08:08 UTCGHSA enrichment
  52. 2026-07-12 03:47 UTCGHSA enrichment
  53. 2026-07-11 23:27 UTCGHSA enrichment
  54. 2026-07-11 19:07 UTCGHSA enrichment
  55. 2026-07-11 14:46 UTCGHSA enrichment
  56. 2026-07-11 10:26 UTCGHSA enrichment
  57. 2026-07-11 06:05 UTCGHSA enrichment
  58. 2026-07-11 01:43 UTCGHSA enrichment
  59. 2026-07-10 21:22 UTCGHSA enrichment
  60. 2026-07-10 17:52 UTCCISA KEV update
  61. 2026-07-10 17:01 UTCGHSA enrichment
  62. 2026-07-10 12:40 UTCGHSA enrichment
  63. 2026-07-10 08:20 UTCGHSA enrichment
  64. 2026-07-10 03:59 UTCGHSA enrichment
  65. 2026-07-09 23:39 UTCGHSA enrichment
  66. 2026-07-09 19:19 UTCGHSA enrichment
  67. 2026-07-09 14:58 UTCGHSA enrichment
  68. 2026-07-09 10:38 UTCGHSA enrichment
  69. 2026-07-09 06:16 UTCGHSA enrichment
  70. 2026-07-09 01:55 UTCGHSA enrichment
  71. 2026-07-08 21:35 UTCGHSA enrichment
  72. 2026-07-08 17:14 UTCGHSA enrichment
  73. 2026-07-08 15:15 UTCEPSS rescore
  74. 2026-07-08 15:15 UTCEPSS rescore
  75. 2026-07-08 12:53 UTCGHSA enrichment

Publicly available exploits

(5 references)

Working exploit code is in the public domain (4 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCtushargurav28/CVE-2026-0257
    First seen Jun 3, 2026

    Palo Alto Networks PAN-OS contains an authentication bypass caused by flaws in the GlobalProtect portal and gateway, letting attackers establish unauthorized VPN connections, exploit requires network access to the portal or gateway.

    Open source ↗
  • GitHub PoC0xBlackash/CVE-2026-0257
    First seen May 30, 2026

    CVE-2026-0257

    Open source ↗
  • GitHub PoCsfewer-r7/CVE-2026-0257
    First seen May 29, 2026

    Proof-of-concept script to leverage the PAN-OS GlobalProtect authentication bypass CVE-2026-0257

    Open source ↗
  • GitHub PoCakashsingh0454/CVE-2026-0257-PoC
    First seen May 29, 2026
    Open source ↗
  • Nucleijavascript/cves/2026/CVE-2026-0257.yaml
    First seen Jan 1, 2026

    Palo Alto Networks PAN-OS - Authentication Bypass

    Open source ↗

Frequently asked(6)

What is CVE-2026-0257?
CVE-2026-0257 is a high vulnerability published on May 13, 2026. Authentication bypass vulnerabilities in the GlobalProtect portal and gateway of Palo Alto Networks PAN-OS® software allows the attacker to bypass security restrictions and establish an unauthorized VPN connection. Panorama and Cloud NGFW are not impacted by these issues.
When was CVE-2026-0257 disclosed?
CVE-2026-0257 was first published in the National Vulnerability Database on May 13, 2026, with the most recent update on July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-0257 actively exploited?
Yes. CISA added CVE-2026-0257 to the Known Exploited Vulnerabilities catalog on May 29, 2026, affecting Palo Alto Networks PAN-OS. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2026-0257?
CVE-2026-0257 has a CVSS v4.0 base score of 7.8 (CNA self-assessment; NVD's own analysis pending). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.1.
Which products are affected by CVE-2026-0257?
CVE-2026-0257 affects Palo Alto Networks PAN-OS. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2026-0257?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-0257, 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

Explore the affected products and dependency analysis for CVE-2026-0257

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