How severe is CVE-2020-1996?

CVE-2020-1996 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2020-1996 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-1996?

CVE-2020-1996 affects Paloaltonetworks Pan-os. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-1996?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-1996 published?

CVE-2020-1996 was published on 2020-05-13 and last updated on 2026-06-17.

CVE-2020-1996

CVE-2020-1996 is a medium-severity vulnerability in Paloaltonetworks Pan-os with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-862.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-862
Affected product: Paloaltonetworks Pan-os
Published: 2020-05-13
Last modified: 2026-06-17

Description

A missing authorization vulnerability in the management server component of PAN-OS Panorama allows a remote unauthenticated user to inject messages into the management server ms.log file. This vulnerability can be leveraged to obfuscate an ongoing attack or fabricate log entries in the ms.log file This issue affects: All versions of PAN-OS 7.1 and 8.0; PAN-OS 8.1 versions earlier than 8.1.14; PAN-OS 9.0 versions earlier than 9.0.9.

Frequently asked questions

What is CVE-2020-1996?: A missing authorization vulnerability in the management server component of PAN-OS Panorama allows a remote unauthenticated user to inject messages into the management server ms.log file. This vulnerability can be leveraged to obfuscate an ongoing attack or fabricate log entries in the ms.log file This issue affects: All versions of PAN-OS 7.1 and 8.0; PAN-OS 8.1 versions earlier than 8.1.14; PAN-OS 9.0 versions earlier than 9.0.9.
How severe is CVE-2020-1996?: CVE-2020-1996 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2020-1996 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-1996?: CVE-2020-1996 affects Paloaltonetworks Pan-os. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-1996?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-1996 published?: CVE-2020-1996 was published on 2020-05-13 and last updated on 2026-06-17.

References

https://security.paloaltonetworks.com/CVE-2020-1996

Affected products (1)

cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*

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