CVE-2020-1998: palo alto networks pan-os Improper Authorization
Vulnerability summary
CVE-2020-1998 is a high (CVSS 8.8) Improper Authorization vulnerability in palo alto networks pan-os. EPSS estimates a 0.89% chance of exploitation in the next 30 days, higher than 58.9% of scored vulnerabilities.
Timeline
- 13-05-2020PublishedVulnerability first disclosed.
- 16-09-2024Last modifiedVulnerability information updated.
Description
An improper authorization vulnerability in PAN-OS that mistakenly uses the permissions of local linux users instead of the intended SAML permissions of the account when the username is shared for the purposes of SSO authentication. This can result in authentication bypass and unintended resource access for the user. 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; PAN-OS 9.1 versions earlier than 9.1.1; All versions of PAN-OS 8.0.
CVSS metrics
3 scores · 2 sources · 2 versions- CVE.orgCNA5.4MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:NDiffers
EPSS trend
Probability
0.89%
Chance of exploitation in the next 30 days
Percentile
59%
Versus all other CVEs
30-day change
0.00 pp
From 0.89% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-285Improper AuthorizationThe product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.
- CWE-863Incorrect AuthorizationThe product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.
Affected systems
Palo alto networks1 product
- pan-osEOL≥ 8.0.0, < 8.1.0 | ≥ 8.1, < 8.1.13 | ≥ 7.1, < 7.1.26 | ≥ 9.0, < 9.0.6 | ≥ 9.1, < 9.1.1
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 | ≥ 9.1.0, < 9.1.1
2 vendors · 2 products