Skip to content
Fencer Intel
high 8.8

CVE-2019-12991 kev in the critical feed json

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).

published 7y ago modified 4mo ago also EUVD-2019-4566

cvss
8.8
version 3.1, CNA
cisa kev
Exploited
added 2022-03-25
epss
74.1%
EPSS 74.1% chance of exploitation in 30 days, percentile 99.4%
public exploits
1
Exploit-DB

Summary

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).

Patch / fix

cisa required action Apply updates per vendor instructions.

  • citrix netscaler_sd-wan 10.0.8
  • citrix sd-wan 10.2.3

Is CVE-2019-12991 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Timeline

  1. First public exploit (EDB-47112)
  2. Published
  3. Added to CISA KEV
  4. CISA patch deadline
  5. CISA SSVC: exploitation active

Known exploited

Added
4y ago
Patch by
2022-04-15 (4y ago)
Ransomware
Not known
Required action
Apply updates per vendor instructions.
Vendor, product
Citrix, SD-WAN and NetScaler
CISA name
Citrix SD-WAN and NetScaler Command Injection Vulnerability

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
no
Technical impact
total
Assessed
last yr.

Exploit prediction

74.07% chance of exploitation in the next 30 days, higher than 99.4% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-47112 Citrix SD-WAN Appliance 10.2.2 - Authentication Bypass / Remote Command Execution webapps, 2019-07-12
  • tenable.com https://www.tenable.com/security/research/tra-2019-32 referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/153638/Citrix-SD-WAN-Appliance-10.2.2-Authentication-Bypass-Remote-Command-Execution.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 9.0 AV:N/AC:L/Au:S/C:C/I:C/A:C

Classification

Weakness
  • CWE-78 Improper Neutralization of Special Elements used in an OS Command

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.