CVE-2026-0263

CRITICALNVD 9.87.2
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.2 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 77% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
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.

A buffer overflow vulnerability in the IKEv2 processing of Palo Alto Networks PAN-OS® software allows an unauthenticated network-based attacker to execute arbitrary code with elevated privileges on the firewall, or cause a denial of service (DoS) condition.

Panorama, Cloud NGFW, and Prisma® Access are not impacted by these vulnerabilities.

CVSS v3
9.8
EG Score
7.2(medium)
EPSS
29.5%
KEV
Not listed

Published

May 13, 2026

Last Modified

July 14, 2026

Advisory Details (1)

Auto-updated Jun 11, 2026
No patch confirmed yet.
generic

CVE-2026-0263 PAN-OS: Remote Code Execution (RCE) in IKEv2 Processing

https://security.paloaltonetworks.com/CVE-2026-0263

Vendor Advisories for CVE-2026-0263(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 8× in last 7d / 52× 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 163 total refreshes for this CVE.

  1. 2026-07-15 16:57 UTCEPSS rescore
  2. 2026-07-15 02:00 UTCEPSS rescore
  3. 2026-07-14 15:20 UTCNVD updateCVSS v3 → 9.8 · severity → CRITICAL
  4. 2026-07-13 22:30 UTCEPSS rescore
  5. 2026-07-13 06:12 UTCEPSS rescore
  6. 2026-07-12 05:46 UTCEPSS rescore
  7. 2026-07-11 08:27 UTCEPSS rescore
  8. 2026-07-09 19:10 UTCEPSS rescore
  9. 2026-07-08 15:15 UTCEPSS rescore
  10. 2026-07-08 15:15 UTCEPSS rescore
  11. 2026-07-07 13:46 UTCEPSS rescore
  12. 2026-07-06 16:27 UTCEPSS rescore
  13. 2026-07-06 02:23 UTCEPSS rescore
  14. 2026-07-05 02:30 UTCEPSS rescore
  15. 2026-07-05 02:30 UTCEPSS rescore
  16. 2026-07-01 15:06 UTCEPSS rescore
  17. 2026-07-01 15:06 UTCEPSS rescore
  18. 2026-06-30 23:22 UTCEPSS rescore
  19. 2026-06-29 22:16 UTCEG score recompute
  20. 2026-06-29 22:16 UTCGHSA enrichment
  21. 2026-06-29 14:06 UTCEPSS rescore
  22. 2026-06-28 14:07 UTCEPSS rescore
  23. 2026-06-28 12:53 UTCEG score recompute
  24. 2026-06-28 12:52 UTCGHSA enrichment
  25. 2026-06-28 04:56 UTCEPSS rescore
Show 75 more
  1. 2026-06-28 04:56 UTCEPSS rescore
  2. 2026-06-27 23:29 UTCEG score recompute
  3. 2026-06-27 23:29 UTCGHSA enrichment
  4. 2026-06-27 09:17 UTCEG score recompute
  5. 2026-06-27 09:17 UTCGHSA enrichment
  6. 2026-06-27 03:08 UTCEPSS rescore
  7. 2026-06-26 20:31 UTCEG score recompute
  8. 2026-06-26 20:31 UTCGHSA enrichment
  9. 2026-06-25 19:39 UTCEG score recompute
  10. 2026-06-25 19:39 UTCGHSA enrichment
  11. 2026-06-25 13:49 UTCEPSS rescore
  12. 2026-06-24 14:05 UTCEPSS rescore
  13. 2026-06-23 21:32 UTCEPSS rescore
  14. 2026-06-22 14:25 UTCEPSS rescore
  15. 2026-06-22 14:25 UTCEPSS rescore
  16. 2026-06-21 14:56 UTCEPSS rescore
  17. 2026-06-21 14:56 UTCEPSS rescore
  18. 2026-06-21 01:59 UTCEPSS rescore
  19. 2026-06-21 01:59 UTCEPSS rescore
  20. 2026-06-19 19:25 UTCEPSS rescore
  21. 2026-06-18 17:52 UTCEPSS rescore
  22. 2026-06-17 17:53 UTCEPSS rescore
  23. 2026-06-17 14:29 UTCEG score recompute
  24. 2026-06-17 14:28 UTCGHSA enrichment
  25. 2026-06-16 22:32 UTCEG score recompute
  26. 2026-06-16 22:32 UTCGHSA enrichment
  27. 2026-06-16 17:52 UTCEPSS rescore
  28. 2026-06-16 00:50 UTCEG score recompute
  29. 2026-06-16 00:49 UTCGHSA enrichment
  30. 2026-06-15 17:48 UTCEPSS rescore
  31. 2026-06-15 01:11 UTCEG score recompute
  32. 2026-06-15 01:11 UTCGHSA enrichment
  33. 2026-06-14 23:18 UTCEPSS rescore
  34. 2026-06-14 12:27 UTCEG score recompute
  35. 2026-06-14 12:27 UTCGHSA enrichment
  36. 2026-06-13 23:44 UTCEG score recompute
  37. 2026-06-13 23:44 UTCGHSA enrichment
  38. 2026-06-13 23:00 UTCEPSS rescore
  39. 2026-06-13 23:00 UTCEPSS rescore
  40. 2026-06-13 02:18 UTCEG score recompute
  41. 2026-06-13 02:18 UTCGHSA enrichment
  42. 2026-06-12 23:12 UTCEPSS rescore
  43. 2026-06-12 13:26 UTCEG score recompute
  44. 2026-06-12 13:26 UTCGHSA enrichment
  45. 2026-06-12 00:43 UTCEG score recompute
  46. 2026-06-12 00:43 UTCGHSA enrichment
  47. 2026-06-11 14:00 UTCEPSS rescore
  48. 2026-06-11 12:00 UTCEG score recompute
  49. 2026-06-11 11:59 UTCGHSA enrichment
  50. 2026-06-10 23:15 UTCEG score recompute
  51. 2026-06-10 23:14 UTCGHSA enrichment
  52. 2026-06-10 22:18 UTCEPSS rescore
  53. 2026-06-10 13:22 UTCEPSS rescore
  54. 2026-06-10 10:32 UTCEG score recompute
  55. 2026-06-10 10:32 UTCGHSA enrichment
  56. 2026-06-09 21:49 UTCEG score recompute
  57. 2026-06-09 21:49 UTCGHSA enrichment
  58. 2026-06-09 08:45 UTCEG score recompute
  59. 2026-06-09 08:45 UTCGHSA enrichment
  60. 2026-06-08 20:00 UTCEG score recompute
  61. 2026-06-08 20:00 UTCGHSA enrichment
  62. 2026-06-08 14:17 UTCEPSS rescore
  63. 2026-06-08 14:17 UTCEPSS rescore
  64. 2026-06-08 03:24 UTCEG score recompute
  65. 2026-06-08 03:24 UTCGHSA enrichment
  66. 2026-06-07 15:25 UTCEPSS rescore
  67. 2026-06-07 15:24 UTCEPSS rescore
  68. 2026-06-07 14:41 UTCEG score recompute
  69. 2026-06-07 14:41 UTCGHSA enrichment
  70. 2026-06-07 01:58 UTCEG score recompute
  71. 2026-06-07 01:58 UTCGHSA enrichment
  72. 2026-06-06 13:47 UTCEPSS rescore
  73. 2026-06-06 13:47 UTCEPSS rescore
  74. 2026-06-06 13:47 UTCEPSS rescore
  75. 2026-06-06 13:15 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-0263?
CVE-2026-0263 is a critical vulnerability published on May 13, 2026. A buffer overflow vulnerability in the IKEv2 processing of Palo Alto Networks PAN-OS® software allows an unauthenticated network-based attacker to execute arbitrary code with elevated privileges on the firewall, or cause a denial of service (DoS) condition. Panorama, Cloud NGFW, and Prisma® Access…
When was CVE-2026-0263 disclosed?
CVE-2026-0263 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-2026-0263 actively exploited?
CVE-2026-0263 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 29.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-0263?
CVE-2026-0263 has a CVSS v3 base score of 9.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 7.2.
How do I remediate CVE-2026-0263?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-0263, 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-2026-0263

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