RCE in Citrix Netscaler_sd-wan
CVE-2019-12991
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).
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.741 (99.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Citrix Netscaler_sd-wan
- Citrix Sd-wan
- N/a — versions n/a
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Public proof-of-concept exploits
References
- cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (VDB Entry, Third Party Advisory, vdb-entry, Broken Link, x_refsource_BID)
- cve@mitre.org (Exploit, VDB Entry, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (x_refsource_MISC, Vendor Advisory)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
Frequently asked questions
- What is CVE-2019-12991?
- CVE-2019-12991 is a high-severity vulnerability in Citrix Netscaler_sd-wan, classified under OS Command Injection. CVSS score: 8.8/10. Published 2019-07-16.
- How severe is CVE-2019-12991?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2019-12991 known to be exploited?
- Yes. CVE-2019-12991 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-25), indicating it is being actively exploited. 3 public proof-of-concept repositories are indexed.