Buffer overflow in Palo Alto Networks Pan-Os
CVE-2020-2040
A buffer overflow vulnerability in PAN-OS allows an unauthenticated attacker to disrupt system processes and potentially execute arbitrary code with root privileges by sending a malicious request to the Captive Portal or Multi-Factor Authentication interface. This issue impacts: All versions of PAN-OS 8.0; PAN-OS 8.1 versions earlier than PAN-OS 8.1.15; PAN-OS 9.0 versions earlier than PAN-OS 9.0.9; PAN-OS 9.1 versions earlier than PAN-OS 9.1.3.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.039 (90.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 90.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.039 · newest: 0.039 · change: 0.000
Affected products
- Palo Alto Networks Pan-Os — versions 8.0.*, 9.0, 9.1
- Paloaltonetworks Pan-Os
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security.paloaltonetworks.com/CVE-2020-2040 (Vendor Advisory)
Frequently asked questions
- What is CVE-2020-2040?
- CVE-2020-2040 is a critical-severity vulnerability in Palo Alto Networks Pan-Os, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2020-09-09.
- How severe is CVE-2020-2040?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2020-2040 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.