CVE-2019-12991
Citrix — Citrix SD-WAN and NetScaler Command Injection Vulnerability
Citrix · CWE-78 — Operating system command injection · in CISA KEV since 2022-03-25
KEV since 2022 · listed over a yearCISA KEVActively Exploited
79
EVRS 79 of 100 Urgent
Patch This Cycle
Rank 620 of 2,960 tracked
Why it scores 79
Evidence available: 6 of 7 signalsListed in the CISA KEV catalog, and an EPSS probability of 0.745.
- CISA KEVApplied
- RansomwareDid not apply
- Vendor exploitationDid not apply
- EPSSApplied
- Microsoft Exploitability IndexNot applicable
- Pre-patch disclosureNo data
- KEV recencyDid not apply
- CVSSApplied
The band answers “how soon”, not “how bad”. No data for: Pre-patch disclosure. Why some signals show no data
Fix
Patch or fixed version identifiedCISA required action
Fixed in
netscaler sd-wan: update to 10.0.8 or later | sd-wan: update to 10.2.3 or later
Affected versions
- netscaler sd-wan
>= 10.0.0 < 10.0.8 - sd-wan
>= 10.2.0 < 10.2.3
Remediation
Apply updates per vendor instructions.
Fixed versions from NVD.
Evidence
Each value with its source| Measure | Value | Source |
|---|---|---|
| CVSS base scoreHow severe the flaw is in itself. It does not say how likely an attack is. | 8.8 | NVD |
| FIRST EPSSFIRST's estimate of the chance this is exploited in the next 30 days, and how that ranks against all CVEs. | 0.745 (99.5th pctl) | FIRST EPSS |
| Actively exploitedWhether a source of record has confirmed attacks using it in the wild. | Confirmed | CISA KEV |
| Ransomware campaign useWhether CISA has seen ransomware operators use it. | Unknown or none | CISA KEV |
| CISA remediation deadlineThe date US federal agencies must have fixed or mitigated it. | 2022-04-15 · KEV since 2022 · listed over a year | CISA KEV |
| Public exploit moduleA module existing is not the same as active exploitation. | None known | Metasploit |
| EUVD cross-referenceENISA's record: CVSS 8.8 (v3.1), assigned by mitre. | Listed | ENISA EUVD |
Description
NVDCitrix 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).
What CISA says to do