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CISA KEV · Known exploitedHigh

CVE-2019-12991

Citrix SD-WAN and NetScaler

Citrix SD-WAN 10.2.x before 10.2.3 and NetScaler SD-WAN 10.0.x before 10.0.8 have Improper Input Validation (issue 5 of 6).

CVSS
8.8
EPSS
74.1%
99.4% percentile
CISA KEV
Listed
Published
2019.07.17
PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV
Exploit probability74.1%
Technical severityCVSS 8.8

Vulnerability overview

Citrix SD-WAN 10.2.x before 10.2.3 and NetScaler SD-WAN 10.0.x before 10.0.8 have Improper Input Validation (issue 5 of 6).

Affected product and versions

Product
Citrix SD-WAN and NetScaler
Affected versions
>= 10.0.0 < 10.0.8, >= 10.2.0 < 10.2.3
Fixed versions
10.0.8, 10.2.3

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
CISA required action

Apply updates per vendor instructions.

Due date: 2022.04.15
  1. 1
    Identify

    Confirm that Citrix SD-WAN and NetScaler and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-78
KEV added
2022.03.25
Ransomware use
미확인
CVE-2019-12991 — Citrix SD-WAN and NetScaler | SECUFOCUS NOW