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ExploitedNot in CISA KEV yetFix available

CVE-2019-12986

Exploitation confirmed. First attested on 2023-10-14 by GCVE · kevintel, GCVE · shadowserver.

  • Published2019-07-16
  • Fixed in10.0.8
  • WeaknessCWE-78

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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 2 of 6).

Timeline

dates in UTC
  1. 2019-07-1618:15CVE publishedNVD
  2. 2023-10-1415:08Listed as exploited by GCVEGCVE
  3. 2023-10-1415:08Exploitation first reportedGCVE

Observed activity

isMalicious corpus · updated 2026-11-03 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2019-12986?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-12986?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Citrix netscaler sd-wan
BranchAffectedFixed in
10.0≥ 10.0, < 10.0.810.0.8
Citrix sd-wan
BranchAffectedFixed in
10.2≥ 10.2, < 10.2.310.2.3

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

  1. Update Citrix netscaler sd-wan to 10.0.8

Advisories and patches

Detection

read 2026-11-02 22:42 UTC
Nuclei template
available
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

  • GCVEexploitation2023-10-14
  • NVDCVSS 3.09.8read 2026-10-23
  • NVDCVSS 2.010read 2026-10-23
  • NVDweakness (CWE)CWE-78read 2026-10-23
  • FIRST EPSSEPSS score39.5 %read 2026-11-02
  • ProjectDiscoverydetectionread 2026-11-02

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2019-07-16
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2019-12986?

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 2 of 6).

Is CVE-2019-12986 actively exploited?

Active exploitation of CVE-2019-12986 has not been confirmed. Its EPSS score was 39.5% on 2026-11-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-12986?

CVE-2019-12986 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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