CVE-2026-0243

MEDIUMNVD 6.56.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 6.5 from GitHub Security Advisory published 2026-05-13. NVD baseline CVSS 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
6.5EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 6.5Exploit: None knownExposed services: Not assessed

Prisma SD-WAN ION 6.5 6.5.1 through 6.5.3 Upgrade to 6.5.3-b15 or later (from the CVE record's solution, Palo Alto Networks, Inc.) — apply it.

A denial of service (DoS) vulnerability in Palo Alto Networks Prisma SD-WAN ION devices enables an unauthenticated attacker in a network adjacent to a Prisma SD-WAN ION device to cause a system disruption by sending a specially crafted IPv6 packet.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
29
EG Risk 29/100

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 (value × EchelonGraph’s weight)
Severity65% × 45%
The EG Score, 6.5 of 10.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: Prisma SD-WAN ION 6.5 6.5.1 through 6.5.3 Upgrade to 6.5.3-b15 or later (from the CVE record's solution, Palo Alto Networks, Inc.). Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
6th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

Prisma SD-WAN ION 6.5 6.5.1 through 6.5.3 Upgrade to 6.5.3-b15 or later (from the CVE record's solution, Palo Alto Networks, Inc.). Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

May 13, 2026

Last Modified

July 14, 2026

Advisory Details (1)

Auto-updated Jun 17, 2026
Fix named in the CVE record's solution (Palo Alto Networks, Inc.).
Web page

CVE-2026-0243 Prisma SD-WAN: Denial of Service (DoS) Vulnerability Through IPv6 Crafted Packet

https://security.paloaltonetworks.com/CVE-2026-0243

Vendor Advisories for CVE-2026-0243(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 11× in last 7d / 24× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 229 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 129 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  2. 2026-10-12 16:42 UTCEG score recompute
  3. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  4. 2026-10-11 20:17 UTCEG score recompute
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  7. 2026-10-11 13:47 UTCEPSS rescoreEPSS 0.2% · 6th percentile
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  9. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  10. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  11. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  12. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  13. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  14. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  15. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  16. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  17. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  18. 2026-09-29 15:20 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  19. 2026-09-28 13:50 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  20. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  21. 2026-09-23 13:47 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  22. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  23. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  24. 2026-09-16 05:14 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  25. 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.2% · 6th percentile
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  1. 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  2. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  3. 2026-09-11 09:36 UTCEPSS rescoreEPSS 0.2% · 6th percentile
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  5. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  6. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 6th percentile
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  15. 2026-08-25 13:48 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  16. 2026-08-23 17:50 UTCEG score recompute
  17. 2026-08-23 17:50 UTCGHSA enrichmentGHSA-j263-ghj6-w2q7 · GitHub CVSS 6.5
  18. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  19. 2026-08-22 02:05 UTCEG score recompute
  20. 2026-08-22 02:05 UTCGHSA enrichmentGHSA-j263-ghj6-w2q7 · GitHub CVSS 6.5
  21. 2026-08-21 23:48 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  22. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  23. 2026-08-20 19:47 UTCEG score recompute
  24. 2026-08-20 19:47 UTCGHSA enrichmentGHSA-j263-ghj6-w2q7 · GitHub CVSS 6.5
  25. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  26. 2026-08-17 10:30 UTCEG score recompute
  27. 2026-08-17 10:30 UTCGHSA enrichmentGHSA-j263-ghj6-w2q7 · GitHub CVSS 6.5
  28. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  29. 2026-08-16 04:02 UTCEG score recompute
  30. 2026-08-16 04:02 UTCGHSA enrichmentGHSA-j263-ghj6-w2q7 · GitHub CVSS 6.5
  31. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  32. 2026-08-15 01:40 UTCEG score recompute
  33. 2026-08-15 01:40 UTCGHSA enrichmentGHSA-j263-ghj6-w2q7 · GitHub CVSS 6.5
  34. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  35. 2026-08-14 02:30 UTCEG score recompute
  36. 2026-08-14 02:30 UTCGHSA enrichmentGHSA-j263-ghj6-w2q7 · GitHub CVSS 6.5
  37. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  38. 2026-08-12 23:16 UTCEG score recompute
  39. 2026-08-12 23:16 UTCGHSA enrichmentGHSA-j263-ghj6-w2q7 · GitHub CVSS 6.5
  40. 2026-08-12 13:50 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  41. 2026-08-12 00:07 UTCEG score recompute
  42. 2026-08-12 00:07 UTCGHSA enrichmentGHSA-j263-ghj6-w2q7 · GitHub CVSS 6.5
  43. 2026-08-11 13:42 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  44. 2026-08-11 00:56 UTCEG score recompute
  45. 2026-08-11 00:56 UTCGHSA enrichmentGHSA-j263-ghj6-w2q7 · GitHub CVSS 6.5
  46. 2026-08-10 23:59 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  47. 2026-08-10 01:03 UTCEG score recompute
  48. 2026-08-10 01:03 UTCGHSA enrichmentGHSA-j263-ghj6-w2q7 · GitHub CVSS 6.5
  49. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  50. 2026-08-09 01:53 UTCEG score recompute
  51. 2026-08-09 01:53 UTCGHSA enrichmentGHSA-j263-ghj6-w2q7 · GitHub CVSS 6.5
  52. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  53. 2026-08-07 19:59 UTCEG score recompute
  54. 2026-08-07 19:59 UTCGHSA enrichmentGHSA-j263-ghj6-w2q7 · GitHub CVSS 6.5
  55. 2026-08-06 20:49 UTCEG score recompute
  56. 2026-08-06 20:49 UTCGHSA enrichmentGHSA-j263-ghj6-w2q7 · GitHub CVSS 6.5
  57. 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  58. 2026-08-05 21:40 UTCEG score recompute
  59. 2026-08-05 21:40 UTCGHSA enrichmentGHSA-j263-ghj6-w2q7 · GitHub CVSS 6.5
  60. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  61. 2026-08-04 15:09 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  62. 2026-08-04 10:38 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  63. 2026-08-03 19:08 UTCEG score recompute
  64. 2026-08-03 19:08 UTCGHSA enrichmentGHSA-j263-ghj6-w2q7 · GitHub CVSS 6.5
  65. 2026-08-03 10:35 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  66. 2026-08-02 18:54 UTCEG score recompute
  67. 2026-08-02 18:54 UTCGHSA enrichmentGHSA-j263-ghj6-w2q7 · GitHub CVSS 6.5
  68. 2026-08-02 02:26 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  69. 2026-08-01 19:44 UTCEG score recompute
  70. 2026-08-01 19:44 UTCGHSA enrichmentGHSA-j263-ghj6-w2q7 · GitHub CVSS 6.5
  71. 2026-08-01 04:15 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  72. 2026-07-30 16:27 UTCEPSS rescoreEPSS 0.2% · 6th percentile
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  74. 2026-07-28 15:36 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  75. 2026-07-27 14:13 UTCEPSS rescoreEPSS 0.2% · 6th percentile

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Frequently asked(5)

What is CVE-2026-0243?
CVE-2026-0243 is a medium-severity vulnerability; its CVE record was published on May 13, 2026. A denial of service (DoS) vulnerability in Palo Alto Networks Prisma SD-WAN ION devices enables an unauthenticated attacker in a network adjacent to a Prisma SD-WAN ION device to cause a system disruption by sending a specially crafted IPv6 packet.
When was CVE-2026-0243 made public?
CVE-2026-0243 was made public on May 13, 2026: that is the date its CVE record's CNA, Palo Alto Networks, Inc., gives for when the vulnerability was made public. The CVE record itself was published on May 13, 2026. EchelonGraph's copy of the record carries a last-modified date of July 14, 2026; the record at its source may have been updated since.
Is CVE-2026-0243 actively exploited?
CVE-2026-0243 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (6th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-0243?
CVE-2026-0243 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-0243?
The CVE record's solution for CVE-2026-0243, written by its CNA Palo Alto Networks, Inc., names the fix: "Prisma SD-WAN ION 6.5 6.5.1 through 6.5.3 Upgrade to 6.5.3-b15 or later." The vendor advisories EchelonGraph has for CVE-2026-0243 are linked in the Vendor Advisories panel on this page.

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