Medium severity · published Nov 12, 2020
CVE-2020-1999
A vulnerability exists in the Palo Alto Network PAN-OS signature-based threat detection engine that allows an attacker to communicate with devices in the network in a way that is…
5.3
CVSS
1.3%
EPSS
No
On KEV
Description
A vulnerability exists in the Palo Alto Network PAN-OS signature-based threat detection engine that allows an attacker to communicate with devices in the network in a way that is not analyzed for threats by sending data through specifically crafted TCP packets. This technique evades signature-based threat detection. This issue impacts: PAN-OS 8.1 versions earlier than 8.1.17; PAN-OS 9.0 versions earlier than 9.0.11; PAN-OS 9.1 versions earlier than 9.1.5; All versions of PAN-OS 7.1 and PAN-OS 8.0.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.3% · higher than 71% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PA
PAN-OS · Palo Alto Networks
7.1.0 through 7.1.26; 8.0.0 through 8.0.20; 8.1.0 before 8.1.17; 9.0.0 before 9.0.11; 9.1.0 before 9.1.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-1999
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-1999
Vendor Advisory
https://security.paloaltonetworks.com/CVE-2020-1999
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