8.1

CVE-2020-2002: palo alto networks pan-os Authentication Bypass by Spoofing

CVSS: 8.1v3.1HighModified
Published 13-05-2020Last modified 17-09-2024
Open JSON

Vulnerability summary

CVE-2020-2002 is a high (CVSS 8.1) Authentication Bypass by Spoofing vulnerability in palo alto networks pan-os. EPSS estimates a 1.33% chance of exploitation in the next 30 days, higher than 70.7% of scored vulnerabilities.

Overall risk
33/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.1/10
010
High · v3.1 (CVE.org)
EPSS score
1.33%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 13-05-2020
    PublishedVulnerability first disclosed.
  2. 17-09-2024
    Last modifiedVulnerability information updated.

Description

An authentication bypass by spoofing vulnerability exists in the authentication daemon and User-ID components of Palo Alto Networks PAN-OS by failing to verify the integrity of the Kerberos key distribution center (KDC) before authenticating users. This affects all forms of authentication that use a Kerberos authentication profile. A man-in-the-middle type of attacker with the ability to intercept communication between PAN-OS and KDC can login to PAN-OS as an administrator. This issue affects: PAN-OS 7.1 versions earlier than 7.1.26; PAN-OS 8.1 versions earlier than 8.1.13; PAN-OS 9.0 versions earlier than 9.0.6; All version of PAN-OS 8.0.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

1.33%

Chance of exploitation in the next 30 days

Percentile

71%

Versus all other CVEs

30-day change

+0.03 pp

From 1.30% on 21-09-2026

21-09-202621-10-2026
EPSS score
1.33%

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 | ≥ 8.1, < 8.1.13 | ≥ 9.0, < 9.0.6 | ≥ 7.1, < 7.1.26
Paloaltonetworks1 product
  • pan-os≥ 7.1.0, < 7.1.26 | ≥ 8.0.0, ≤ 8.0.20 | ≥ 8.1.0, < 8.1.13 | ≥ 9.0.0, < 9.0.6

2 vendors · 2 products

References

1 links