CVE-2020-1992 json
PAN-OS on PA-7000 Series: Varrcvr daemon network-based denial of service or privilege escalation
published 2020-04-08 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-12782
- cvss
- 8.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.5%
- EPSS 3.5% chance of exploitation in 30 days, percentile 89%
- public exploits
- 0
- none known
Summary
A format string vulnerability in the Varrcvr daemon of PAN-OS on PA-7000 Series devices with a Log Forwarding Card (LFC) allows remote attackers to crash the daemon creating a denial of service condition or potentially execute code with root privileges. This issue affects Palo Alto Networks PAN-OS 9.0 versions before 9.0.7; PAN-OS 9.1 versions before 9.1.2 on PA-7000 Series devices with an LFC installed and configured. This issue requires WildFire services to be configured and enabled. This issue does not affect PAN-OS 8.1 and earlier releases. This issue does not affect any other PA Series firewalls.
Patch / fix
- Palo Alto Networks PAN-OS 9.0.7, 9.1.2
Exploit prediction
3.45% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 9.3 | AV:N/AC:M/Au:N/C:C/I:C/A:C |
Affected products
- Palo Alto Networks PAN-OS
Classification
- Weakness
-
- CWE-134 Use of Externally-Controlled Format String
- Technology feeds
References
-
security.paloaltonetworks.com
/CVE-2020-1992
vendor-advisory
Sources
- CVE List CVE-2020-1992
- NVD CVE-2020-1992
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