CVE-2021-3057: palo alto networks globalprotect app Stack-based Buffer Overflow
Vulnerability summary
CVE-2021-3057 is a high (CVSS 9.3) Stack-based Buffer Overflow vulnerability in palo alto networks globalprotect app. EPSS estimates a 1.43% chance of exploitation in the next 30 days, higher than 72.7% of scored vulnerabilities.
Timeline
- 13-10-2021PublishedVulnerability first disclosed.
- 17-09-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
3 scores · 2 sources · 2 versions- NVDNIST8.1HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
1.43%
Chance of exploitation in the next 30 days
Percentile
73%
Versus all other CVEs
30-day change
0.00 pp
From 1.43% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-121Stack-based Buffer OverflowA stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
Affected systems
Palo alto networks1 product
- globalprotect app≥ 5.1, < 5.1.9 | ≥ 5.2, < 5.2.8 | ≥ 5.3, < 5.3.1
Paloaltonetworks1 product
- globalprotectEOL≥ 5.0, ≤ 5.0.8 | ≥ 5.0, ≤ 5.0.9 | ≥ 5.0, ≤ 5.0.10 | ≥ 5.1, ≤ 5.1.1 | ≥ 5.1, < 5.1.9 | ≥ 5.1.0, ≤ 5.1.4 | ≥ 5.2, < 5.2.8 | ≥ 5.3, < 5.3.1 | 5.0
2 vendors · 2 products