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CVE-2019-12044

24
FAUCET Score

CVE-2019-12044 is a buffer overflow vulnerability affecting multiple versions of Citrix NetScaler Gateway and Application Delivery Controller. This high-severity vulnerability (CVSS 7.5) can be exploited remotely without authentication, leading to a denial of service. While the vulnerability has a low EPSS score and no known public exploits or active exploitation, organizations should still apply patches to mitigate the risk. There is also no significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 10.5.0, < 10.5.70CPE matchmatch criteria
cpe:2.3:o:citrix:netscaler_gateway_firmware:*:*:*:*:*:*:*:*
>= 11.1.0, < 11.1.59.10CPE matchmatch criteria
cpe:2.3:o:citrix:netscaler_gateway_firmware:*:*:*:*:*:*:*:*
>= 12.0.0, < 12.0.59.8CPE matchmatch criteria
cpe:2.3:o:citrix:netscaler_gateway_firmware:*:*:*:*:*:*:*:*
>= 12.1.0, < 12.1.49.23CPE matchmatch criteria
cpe:2.3:o:citrix:netscaler_gateway_firmware:*:*:*:*:*:*:*:*
>= 10.5.0, < 10.5.70CPE matchmatch criteria
cpe:2.3:o:citrix:netscaler_application_delivery_controller_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.55%
Probability of exploitation in next 30 days
EPSS Percentile
72.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0155 is in the 54th percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

citrixpatch availablevia nvd_reference
View patch

References

support.citrix.com / article/CTX249976
PatchVendor Advisory
support.citrix.com / v1/search
Vendor Advisory