02 Records
FEED: ACQUIRING
01 RecordSTATE: PUBLISHED
02 Description
CNA: palo_altoPAN-OS: Invalid URLs in an External Dynamic List (EDL) can Lead to Firewall Outage
03 Exploitation and scoring
SRC: CISA, FIRST, NVD, RED HAT- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 0.84% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Ranks above 55.3% of scored records. A rank, not a probability.
- NVD base score
- 5.9 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
SCHEMA: 5.1
- Published
- 2021-08-11 17:10Z5 YR AGO
- Last updated
- 2024-09-16 19:31Z1 YR AGO
- Reserved
- 2021-01-06
- Assigning CNA
- palo_alto
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 5.9)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-20Improper Input ValidationClass
- Data version
- 5.1
- Document digest
- 448b2bad493167548483f029dbdd40e62ad586fbc8440c79f1d5a087c8851304
05 Affected products
PAIRS: 1VendorProductVersionsPlatforms
Palo Alto NetworksPAN-OS9.0 to < 9.0.14, 9.1 to < 9.1.9, 10.0 to < 10.0.5— SRC: CNA
This issue is fixed in PAN-OS 9.0.14, PAN-OS 9.1.9, PAN-OS 10.0.5, and all later PAN-OS versions.
If a firewall encounters this problem, you will require TAC assistance to make the firewall operational again.