CVE-2020-2027: palo alto networks pan-os Stack-based Buffer Overflow
Vulnerability summary
CVE-2020-2027 is a high (CVSS 9.0) Stack-based Buffer Overflow vulnerability in palo alto networks pan-os. EPSS estimates a 2.13% chance of exploitation in the next 30 days, higher than 81.8% of scored vulnerabilities.
Timeline
- 10-06-2020PublishedVulnerability first disclosed.
- 17-09-2024Last modifiedVulnerability information updated.
Description
A buffer overflow vulnerability in the authd component of the PAN-OS management server allows authenticated administrators to disrupt system processes and potentially execute arbitrary code with root privileges. This issue affects: All versions of PAN-OS 7.1 and PAN-OS 8.0; PAN-OS 8.1 versions earlier than PAN-OS 8.1.13; PAN-OS 9.0 versions earlier than PAN-OS 9.0.7.
CVSS metrics
3 scores · 2 sources · 2 versions- NVDNIST7.2HighCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
2.13%
Chance of exploitation in the next 30 days
Percentile
82%
Versus all other CVEs
30-day change
0.00 pp
From 2.13% 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
- pan-osEOL≥ 7.1.0, < 7.2.0 | ≥ 8.0.0, < 8.1.0 | ≥ 8.1, < 8.1.13 | ≥ 9.0, < 9.0.7
Paloaltonetworks1 product
- pan-os≥ 7.1.0, ≤ 7.1.26 | ≥ 8.0.0, ≤ 8.0.20 | ≥ 8.1.0, < 8.1.13 | ≥ 9.0.0, < 9.0.7
2 vendors · 2 products