CVE-2026-0263

CRITICALNVD 9.89.8
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-13. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.8Exploit: None knownExposed: 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
9.8(medium)
EG Risk
44(Track)
EG Risk 44/100SSVC: 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
Severity98% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
30%
KEV
Not listed

Published

May 13, 2026

Last Modified

July 14, 2026

Advisory Details (1)

Auto-updated Aug 29, 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 7× in last 7d / 102× 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 245 total refreshes for this CVE.

  1. 2026-08-30 01:21 UTCEPSS rescore
  2. 2026-08-28 21:40 UTCEPSS rescore
  3. 2026-08-27 14:24 UTCEPSS rescore
  4. 2026-08-25 13:48 UTCEPSS rescore
  5. 2026-08-24 00:19 UTCGHSA enrichment
  6. 2026-08-23 17:52 UTCEG score recompute
  7. 2026-08-23 17:52 UTCGHSA enrichment
  8. 2026-08-23 00:19 UTCEPSS rescore
  9. 2026-08-21 23:48 UTCEPSS rescore
  10. 2026-08-20 22:55 UTCEPSS rescore
  11. 2026-08-20 20:57 UTCEG score recompute
  12. 2026-08-20 20:57 UTCGHSA enrichment
  13. 2026-08-19 17:03 UTCEPSS rescore
  14. 2026-08-18 13:48 UTCEPSS rescore
  15. 2026-08-17 14:52 UTCEG score recompute
  16. 2026-08-17 14:52 UTCGHSA enrichment
  17. 2026-08-17 10:39 UTCEG score recompute
  18. 2026-08-17 10:39 UTCGHSA enrichment
  19. 2026-08-16 14:56 UTCEPSS rescore
  20. 2026-08-16 12:28 UTCGHSA enrichment
  21. 2026-08-16 08:15 UTCGHSA enrichment
  22. 2026-08-16 04:03 UTCEG score recompute
  23. 2026-08-16 04:03 UTCGHSA enrichment
  24. 2026-08-16 02:14 UTCEPSS rescore
  25. 2026-08-15 01:30 UTCEPSS rescore
Show 75 more
  1. 2026-08-14 23:36 UTCGHSA enrichment
  2. 2026-08-14 19:24 UTCGHSA enrichment
  3. 2026-08-14 15:09 UTCGHSA enrichment
  4. 2026-08-14 10:57 UTCGHSA enrichment
  5. 2026-08-14 06:44 UTCGHSA enrichment
  6. 2026-08-14 02:32 UTCEG score recompute
  7. 2026-08-14 02:32 UTCGHSA enrichment
  8. 2026-08-13 22:00 UTCEPSS rescore
  9. 2026-08-13 08:45 UTCGHSA enrichment
  10. 2026-08-13 04:32 UTCGHSA enrichment
  11. 2026-08-13 00:19 UTCGHSA enrichment
  12. 2026-08-12 20:07 UTCGHSA enrichment
  13. 2026-08-12 15:50 UTCEG score recompute
  14. 2026-08-12 15:50 UTCGHSA enrichment
  15. 2026-08-12 13:50 UTCEPSS rescore
  16. 2026-08-11 23:53 UTCGHSA enrichment
  17. 2026-08-11 19:41 UTCGHSA enrichment
  18. 2026-08-11 15:28 UTCEG score recompute
  19. 2026-08-11 15:28 UTCGHSA enrichment
  20. 2026-08-11 13:42 UTCEPSS rescore
  21. 2026-08-11 09:48 UTCGHSA enrichment
  22. 2026-08-11 05:09 UTCGHSA enrichment
  23. 2026-08-11 00:57 UTCEG score recompute
  24. 2026-08-11 00:57 UTCGHSA enrichment
  25. 2026-08-10 23:59 UTCEPSS rescore
  26. 2026-08-10 11:45 UTCGHSA enrichment
  27. 2026-08-10 07:29 UTCGHSA enrichment
  28. 2026-08-10 03:17 UTCGHSA enrichment
  29. 2026-08-09 23:04 UTCGHSA enrichment
  30. 2026-08-09 18:52 UTCGHSA enrichment
  31. 2026-08-09 14:39 UTCEG score recompute
  32. 2026-08-09 14:39 UTCGHSA enrichment
  33. 2026-08-09 13:46 UTCEPSS rescore
  34. 2026-08-09 10:27 UTCGHSA enrichment
  35. 2026-08-09 06:07 UTCGHSA enrichment
  36. 2026-08-09 01:55 UTCEG score recompute
  37. 2026-08-09 01:55 UTCGHSA enrichment
  38. 2026-08-08 16:37 UTCEPSS rescore
  39. 2026-08-08 12:35 UTCGHSA enrichment
  40. 2026-08-08 08:21 UTCGHSA enrichment
  41. 2026-08-08 04:09 UTCGHSA enrichment
  42. 2026-08-07 23:56 UTCGHSA enrichment
  43. 2026-08-07 19:44 UTCEG score recompute
  44. 2026-08-07 19:44 UTCGHSA enrichment
  45. 2026-08-07 15:31 UTCGHSA enrichment
  46. 2026-08-07 11:18 UTCGHSA enrichment
  47. 2026-08-07 07:05 UTCGHSA enrichment
  48. 2026-08-07 01:23 UTCGHSA enrichment
  49. 2026-08-06 18:51 UTCGHSA enrichment
  50. 2026-08-06 14:39 UTCEG score recompute
  51. 2026-08-06 14:39 UTCGHSA enrichment
  52. 2026-08-06 13:46 UTCEPSS rescore
  53. 2026-08-06 10:19 UTCGHSA enrichment
  54. 2026-08-06 06:06 UTCGHSA enrichment
  55. 2026-08-06 01:53 UTCGHSA enrichment
  56. 2026-08-05 21:41 UTCEG score recompute
  57. 2026-08-05 21:41 UTCGHSA enrichment
  58. 2026-08-05 19:17 UTCEPSS rescore
  59. 2026-08-04 15:09 UTCEPSS rescore
  60. 2026-08-04 10:38 UTCEPSS rescore
  61. 2026-08-04 03:51 UTCGHSA enrichment
  62. 2026-08-03 23:35 UTCGHSA enrichment
  63. 2026-08-03 19:09 UTCEG score recompute
  64. 2026-08-03 19:09 UTCGHSA enrichment
  65. 2026-08-03 10:35 UTCEPSS rescore
  66. 2026-08-03 01:28 UTCGHSA enrichment
  67. 2026-08-02 21:16 UTCGHSA enrichment
  68. 2026-08-02 17:03 UTCGHSA enrichment
  69. 2026-08-02 12:50 UTCGHSA enrichment
  70. 2026-08-02 08:38 UTCGHSA enrichment
  71. 2026-08-02 04:24 UTCEG score recompute
  72. 2026-08-02 04:24 UTCGHSA enrichment
  73. 2026-08-02 02:26 UTCEPSS rescore
  74. 2026-08-02 00:08 UTCGHSA enrichment
  75. 2026-08-01 19:54 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 0% probability of exploitation in the next 30 days, which ranks it in the top 69.9% of all scored CVEs.
What is the CVSS score of CVE-2026-0263?
CVE-2026-0263 has a CVSS v3 base score of 9.8 (NVD).
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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