Palo Alto Networks PAN-OS Reflected Amplification Denial-of-Service Vulnerability
A Palo Alto Networks PAN-OS URL filtering policy misconfiguration could allow a network-based attacker to conduct reflected and amplified TCP denial-of-service (RDoS) attacks.
- Vendor
- Palo Alto Networks
- Product
- PAN-OS
- CVSS
- 8.6
- EPSS (exploit probability)
- 2.7%
- Status
- kev
- CISA patch-by (BOD 22-01)
- Added to KEV
Is CVE-2022-0028 being exploited?
Yes. CISA added CVE-2022-0028 to its Known Exploited Vulnerabilities catalog on . CISA only lists a CVE when it has reliable evidence of exploitation in the wild.
FIRST's EPSS model puts the probability of exploitation activity in the next 30 days at 2.7% (scored October 27, 2026).
- CISA KEV[ LISTED ]
- ENISA EUVD (exploited)[ — ]
- CIRCL KEV[ — ]
Catalog snapshot 2026-11-13. Full cross-catalog view: /kev-comparison
CVE-2022-0028 timeline
Every event links to its source. Catalog dates are each catalog's own; day offsets count from NVD publication. Data: JSON
What to do
CISA required actionApply updates per vendor instructions.
US federal civilian agencies must remediate by (21 days after listing) under BOD 22-01. Everyone else: that deadline is a sensible upper bound, not a target. Vendor guidance and the NVD record are linked under Source above.
Other Palo Alto Networks PAN-OS CVEs we track
| CVE / Vulnerability | Severity | CVSS | EPSS | Added to KEV |
|---|---|---|---|---|
| CVE-2026-0322 Palo Alto Networks PAN-OS Code Injection Vulnerabilitywrite-up | [ HIGH ] | — | 2.1% | |
| CVE-2026-0257 PAN-OS GlobalProtect authentication bypassransomware usewrite-up | [ CRITICAL ] | 9.1 | 95.6% | |
| CVE-2026-0300 Palo Alto Networks PAN-OS Out-of-bounds Write Vulnerability | [ CRITICAL ] | 9.8 | 41.7% | |
| CVE-2025-0111 Palo Alto Networks PAN-OS File Read Vulnerability | [ MEDIUM ] | 6.5 | 2.0% | |
| CVE-2025-0108 Palo Alto Networks PAN-OS Authentication Bypass Vulnerability | [ CRITICAL ] | 9.1 | 98.5% | |
| CVE-2024-3393 Palo Alto Networks PAN-OS Malicious DNS Packet Vulnerability | [ HIGH ] | 7.5 | 30.2% | |
| CVE-2024-9474 Palo Alto Networks PAN-OS Management Interface OS Command Injection Vulnerabilityransomware use | [ HIGH ] | 7.2 | 93.8% | |
| CVE-2024-0012 Palo Alto Networks PAN-OS Management Interface Authentication Bypass Vulnerabilityransomware use | [ CRITICAL ] | 9.8 | 99.8% |