CVE-2021-3057

highpriority · track · 38EPSS 0.014 · 73 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.43% (73rd) EPSS

CVSS 9.3 · high

Is it mine?

12 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-24

A stack-based buffer overflow vulnerability exists in the Palo Alto Networks GlobalProtect app that enables a man-in-the-middle attacker to disrupt system processes and potentially execute arbitrary code with SYSTEM privileges. This issue impacts: GlobalProtect app 5.1 versions earlier than GlobalProtect app 5.1.9 on Windows; GlobalProtect app 5.2 versions earlier than GlobalProtect app 5.2.8 on Windows; GlobalProtect app 5.2 versions earlier than GlobalProtect app 5.2.8 on the Universal Windows Platform; GlobalProtect app 5.3 versions earlier than GlobalProtect app 5.3.1 on Linux.

cvss

Technical severity, 0–10. One row per scoring source.

9.3

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.09.3highAV:N/AC:M/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 8.6 · impact 10

v3.18.1highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.18.1highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · psirt@paloaltonetworks.comexploitability 2.2 · impact 5.9

v3.17.4highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-787USprimaryCWE-121US

affected products (12)

Products and version ranges known to be affected.

Palo Alto Networks GlobalProtect App5.1 → 5.1.9enisa_euvdEU
Palo Alto Networks GlobalProtect App5.2 → 5.2.8enisa_euvdEU
Palo Alto Networks GlobalProtect App5.3 → 5.3.1enisa_euvdEU
paloaltonetworks globalprotect5.0 → 5.0.8nvdUScpe:2.3:a:paloaltonetworks:globalprotect:*:*:*:*:*:*:*:*
paloaltonetworks globalprotect5.0 → 5.0.9nvdUScpe:2.3:a:paloaltonetworks:globalprotect:*:*:*:*:*:*:*:*
paloaltonetworks globalprotect= 5.0nvdUScpe:2.3:a:paloaltonetworks:globalprotect:*:*:*:*:*:*:*:*
paloaltonetworks globalprotect5.0 → 5.0.10nvdUScpe:2.3:a:paloaltonetworks:globalprotect:*:*:*:*:*:*:*:*
paloaltonetworks globalprotect5.1 → 5.1.1nvdUScpe:2.3:a:paloaltonetworks:globalprotect:*:*:*:*:*:*:*:*
paloaltonetworks globalprotect5.1 → 5.1.9nvdUScpe:2.3:a:paloaltonetworks:globalprotect:*:*:*:*:*:*:*:*
paloaltonetworks globalprotect5.1.0 → 5.1.4nvdUScpe:2.3:a:paloaltonetworks:globalprotect:*:*:*:*:*:*:*:*
paloaltonetworks globalprotect5.2 → 5.2.8nvdUScpe:2.3:a:paloaltonetworks:globalprotect:*:*:*:*:*:*:*:*
paloaltonetworks globalprotect5.3 → 5.3.1nvdUScpe:2.3:a:paloaltonetworks:globalprotect:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2021-10-13modified 2026-06-17

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+16030 more

references (6)

External citations — patches, advisories, analysis.

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