8.1

CVE-2026-0244: palo alto networks prisma sd-wan ion Improper Certificate Validation

CVSS: 8.1v3.1HighAnalyzed
Published 13-05-2026Last modified 13-05-2026
Open JSON

Vulnerability summary

CVE-2026-0244 is a high (CVSS 8.1) Improper Certificate Validation vulnerability in palo alto networks prisma sd-wan ion. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 11.4% of scored vulnerabilities.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.1/10
010
High · v3.1 (NVD)
EPSS score
0.22%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 13-05-2026
    PublishedVulnerability first disclosed.
  2. 13-05-2026
    Last modifiedVulnerability information updated.

Description

An improper certificate validation vulnerability in the Palo Alto Networks Prisma SD-WAN ION enables man-in-the-middle (MitM) attacker to impersonate the controller.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.22%

Chance of exploitation in the next 30 days

Percentile

11%

Versus all other CVEs

30-day change

0.00 pp

From 0.22% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.22%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Palo alto networks1 product
  • prisma sd-wan ion≥ 6.5.0, < 6.5.3-b15 | ≥ 6.4.0, < 6.4.3-b8 | ≥ 6.3.0, < 6.3.6-b10
Paloaltonetworks1 product
  • prisma_sd-wan≥ 6.3.1, < 6.3.6 | ≥ 6.4.1, < 6.4.3 | ≥ 6.5.1, < 6.5.3 | 6.3.6 | 6.3.6:b6 | 6.3.6:b9 | 6.4.3 | 6.4.3:b6 | 6.4.3:b8 | 6.5.3 | 6.5.3:b11 | 6.5.3:b9 | 6.5.3:i-b10

2 vendors · 2 products

References

1 links