CVEvulnerability

CVE-2020-1999

5.3 MEDIUM Published 2020-11-12 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2020-11-12
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS 3.1 ([email protected])
5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:P/A:N
Weaknesses
CWE-754

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.

Affected configurations

• paloaltonetworks pan-os (>= 7.1.0 <= 7.1.26) • paloaltonetworks pan-os (>= 8.0.0 <= 8.0.20) • paloaltonetworks pan-os (>= 8.1.0 < 8.1.17) • paloaltonetworks pan-os (>= 9.0.0 < 9.0.11) • paloaltonetworks pan-os (>= 9.1.0 < 9.1.5)

Related

Weakness · CWE (1)

  • CWE-754 Improper Check for Unusual or Exceptional Conditions weakness

References