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CVE-2020-1993

PAN-OS: GlobalProtect Portal PHP session fixation vulnerability

Low3.7EPSS 0.43%
Published
Updated
Reserved
Assigned by
palo_alto

Description

The GlobalProtect Portal feature in PAN-OS does not set a new session identifier after a successful user login, which allows session fixation attacks, if an attacker is able to control a user's session ID. This issue affects: All PAN-OS 7.1 and 8.0 versions; PAN-OS 8.1 versions earlier than 8.1.14; PAN-OS 9.0 versions earlier than 9.0.8.

Timeline

  1. ID reserved

    By palo_alto

  2. · 5 months later

    Published

  3. · 4 years later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2020-1993, by who scored it
Scored byCVSSScoreVector
palo_altoCNA (assigner)3.1Low3.7CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N
NVDNVD · Modified3.1Medium5.4CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
EPSS (exploitation in 30 days)
0.43% · top 62% of all CVEs (7 Nov 2026)
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 3.7.

Weakness

Affected products

  • Palo Alto Networks · PAN-OS

    • affected 8.0.*
    • affected 7.1.*
    • affected 8.1 – < 8.1.14
    • affected 9.0 – < 9.0.8
    • unaffected 9.2.0 – < 9.2*
    • unaffected 9.1.0 – < 9.1*

What to do

Solution: This issue is fixed in PAN-OS 8.1.14, PAN-OS 9.0.8, PAN-OS 9.1.0, PAN-OS 9.2.0, and all later PAN-OS versions. PAN-OS 8.0 is now end-of-life as of October 31, 2019, and is no longer covered by our Product Security Assurance policies. PAN-OS 7.1 is on extended support until June 30, 2020, and is only being considered for critical security vulnerability fixes.

Workaround: There are no known workarounds for this issue.

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .