CVE-2020-1977Network attack vector

Administrator action hijacking via unprotected endpoints

Published Feb 12, 2020 · Updated Sep 17, 2024

Cross-site request forgery in Palo Alto Networks Expedition 1.1.51 and earlier allows remote attackers to perform administrator actions. Multiple state-changing PHP endpoints accept forged browser requests under an active victim session without sufficient request-origin validation. An administrator must have an active session and be induced to trigger the request, after which the attacker acts with that administrator’s permissions.

CVSS severity7.5
High
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Cross-site request forgery in Palo Alto Networks Expedition 1.1.51 and earlier allows remote attackers to perform administrator actions. Multiple state-changing PHP endpoints accept forged browser requests under an active victim session without sufficient request-origin validation. An administrator must have an active session and be induced to trigger the request, after which the attacker acts with that administrator’s permissions.

The record

CVE
CVE-2020-1977
Published
Feb 12, 2020
Updated
Sep 17, 2024
Vendor
Palo Alto Networks
Product
Expedition
Classifications
CWE-352, T1204
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 12, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=1.1 <=1.1.51 changes=[{"at":"1.1.52","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Palo Alto Networks · Expeditionversion=1.1 <=1.1.51 changes=[{"at":"1.1.52","status":"unaffected"}]

Published CVSS scores

7.5Palo Alto NetworksCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P
8.3TenableAV:N/AC:M/Au:N/C:P/I:P/A:C

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
T1204User Execution

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo