CVE-2021-3057

8.1 HIGH

A stack-based buffer overflow vulnerability exists in the Palo Alto Networks GlobalProtect app that enables a man-in-the-middle attacker ...

Published: 2021-10-13 · Last updated: 2026-06-17

Severity and scoring

CVSS: 8.1 HIGH
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-121, CWE-787

Affected products

Vendor	Product
paloaltonetworks	globalprotect

Description

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.

Source: NVD

References

[NVD]https://nvd.nist.gov/vuln/detail/CVE-2021-3057
[Vendor advisory]https://security.paloaltonetworks.com/CVE-2021-3057
[Vendor advisory]https://security.paloaltonetworks.com/CVE-2021-3057

Related CVEs

Same vendor

CVE-2026-0257 — Authentication bypass vulnerabilities in the GlobalProtect portal and gateway of Palo Alto Networks PAN-OS® software allows the attacker ... (9.1 CRITICAL)
CVE-2025-0130 — A missing exception check in Palo Alto Networks PAN-OS® software with the web proxy feature enabled allows an unauthenticated attacker to... (7.5 HIGH)
CVE-2021-3055 — An improper restriction of XML external entity (XXE) reference vulnerability in the Palo Alto Networks PAN-OS web interface enables an au... (6.5 MEDIUM)
CVE-2021-3054 — A time-of-check to time-of-use (TOCTOU) race condition vulnerability in the Palo Alto Networks PAN-OS web interface enables an authentica... (7.2 HIGH)
CVE-2021-3053 — An improper handling of exceptional conditions vulnerability exists in the Palo Alto Networks PAN-OS dataplane that enables an unauthenti... (7.5 HIGH)

Same CWE

CVE-2026-47750 — stable-diffusion.cpp is a pure C/C++ library for running diffusion model (Stable Diffusion, Flux, Wan, Qwen Image, Z-Image, and more) inf... (7.8 HIGH)
CVE-2026-47747 — stable-diffusion.cpp is a pure C/C++ library for running diffusion model (Stable Diffusion, Flux, Wan, Qwen Image, Z-Image, and more) inf... (7.8 HIGH)
CVE-2026-47749 — stable-diffusion.cpp is a pure C/C++ library for running diffusion model (Stable Diffusion, Flux, Wan, Qwen Image, Z-Image, and more) inf... (7.8 HIGH)
CVE-2026-12314 — Memory safety bug fixed in Thunderbird 152 (7.5 HIGH)
CVE-2026-12310 — Memory safety bug fixed in Thunderbird 152 (7.5 HIGH)