PAN-OS on PA-7000 Series: Varrcvr daemon network-based denial of service or privilege escalation
Published Apr 8, 2020
9.8
CRITICALCVSS 3.1
EPSS 3.45%
Description
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.
Affected products
-
- Version 9.0StatusaffectedConstraints<9.0.7
- Version 9.1StatusaffectedConstraints<9.1.2
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Palo Alto Networks | Pan-OS | n/a |
|
- ≥ 9.0.0 · < 9.0.7
- ≥ 9.1.0 · < 9.1.2
Running on/with
- n/a
- n/a
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Vendor solution
This issue is fixed in PAN-OS 9.0.7, PAN-OS 9.1.2 and all later versions.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
1 other source (CVE.org) ▾
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:C/I:C/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (18 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 3.45% (0.03451) | 88.63th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.37% (0.03367) | 87.14th | v5 (v2026.06.15) |
| Mar 30, 2025 | 2.05% (0.02050) | 82.27th | v4 (v2025.03.14) |
| Mar 29, 2025 | 4.61% (0.04611) | 81.71th | v4 (v2025.03.14) |
| Jul 20, 2024 | 1.26% (0.01260) | 85.76th | v3 (v2023.03.01) |
| May 18, 2024 | 1.26% (0.01260) | 85.57th | v3 (v2023.03.01) |
| Jan 27, 2024 | 0.93% (0.00932) | 81.32th | v3 (v2023.03.01) |
| Dec 25, 2023 | 0.82% (0.00822) | 79.99th | v3 (v2023.03.01) |
| Mar 15, 2023 | 0.60% (0.00603) | 75.24th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.57% (0.00571) | 74.53th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.16% (0.01156) | 61.37th | v2 (v2022.01.01) |
| Oct 18, 2022 | 1.16% (0.01156) | 60.36th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.16% (0.01156) | 58.36th | v2 (v2022.01.01) |
| Feb 4, 2022 | 15.36% (0.15362) | 92.49th | v2 (v2022.01.01) |
| Feb 3, 2022 | 4.93% (0.04927) | 78.28th | v1 |
| Jan 6, 2022 | 4.93% (0.04927) | 78.07th | v1 |
| Sep 1, 2021 | 1.14% (0.01142) | 66.90th | v1 |
| Apr 14, 2021 | 1.14% (0.01142) | 0.00th | v1 |
References (1)
- https://security.paloaltonetworks.com/CVE-2020-1992 x_refsource_MISCVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://security.paloaltonetworks.com/CVE-2020-1992 | x_refsource_MISCVendor Advisory |
Change history (0)
No recorded changes yet.