10

CVE-2020-2040: palo alto networks pan-os Classic Buffer Overflow

CVSS: 10.0v2.0HighModified
Published 09-09-2020Last modified 16-09-2024
Open JSON

Vulnerability summary

CVE-2020-2040 is a high (CVSS 10.0) Classic Buffer Overflow vulnerability in palo alto networks pan-os. EPSS estimates a 3.94% chance of exploitation in the next 30 days, higher than 90.3% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
10.0/10
010
High · v2.0 (NVD)
EPSS score
3.94%
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. 09-09-2020
    PublishedVulnerability first disclosed.
  2. 16-09-2024
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

3.94%

Chance of exploitation in the next 30 days

Percentile

90%

Versus all other CVEs

30-day change

0.00 pp

From 3.94% on 21-09-2026

21-09-202621-10-2026
EPSS score
3.94%

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
  • pan-osEOL≥ 8.0.0, < 8.1.0 | ≥ 9.0, < 9.0.9 | ≥ 9.1, < 9.1.3 | ≥ 8.1, < 8.1.15
Paloaltonetworks1 product
  • pan-os≥ 8.0.0, ≤ 8.0.20 | ≥ 8.1.0, < 8.1.15 | ≥ 9.0.0, < 9.0.9 | ≥ 9.1.0, < 9.1.3

2 vendors · 2 products

References

1 links