CVE-2020-1995Network attack vector

Service interruption via rasmgr NULL pointer dereference

Published May 13, 2020 · Updated Sep 17, 2024

NULL pointer dereference in the rasmgr daemon in Palo Alto Networks PAN-OS before 9.1.2 allows remote authenticated users to crash it. The daemon dereferences a NULL pointer while processing a crafted administrative request; Palo Alto Networks has not disclosed the request field or code path. Exploitation requires an authenticated administrator, and repeated requests restart the device and place it in maintenance mode, interrupting every PAN-OS service.

CVSS severity4.9
Medium
EPSS probability1.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in the rasmgr daemon in Palo Alto Networks PAN-OS before 9.1.2 allows remote authenticated users to crash it. The daemon dereferences a NULL pointer while processing a crafted administrative request; Palo Alto Networks has not disclosed the request field or code path. Exploitation requires an authenticated administrator, and repeated requests restart the device and place it in maintenance mode, interrupting every PAN-OS service.

The record

CVE
CVE-2020-1995
Published
May 13, 2020
Updated
Sep 17, 2024
Vendor
Palo Alto Networks
Product
PAN-OS
Classifications
CWE-476, T1499.004
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. May 13, 2020CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=9.1 <9.1.2 changes=[{"at":"9.1.2","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Palo Alto Networks · PAN-OSversion=9.1 <9.1.2 changes=[{"at":"9.1.2","status":"unaffected"}]

Published CVSS scores

4.9Palo Alto NetworksCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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