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CVE-2020-8299

21
FAUCET Score

CVE-2020-8299 is a denial-of-service vulnerability affecting multiple versions of Citrix ADC, Citrix/NetScaler Gateway, Citrix ADC FIPS, and Citrix SD-WAN WANOP Edition. An attacker within the same Layer 2 network segment can exploit this flaw to cause uncontrolled resource consumption, leading to a denial-of-service. This vulnerability has a CVSS score of 6.5 (Medium), indicating a low attack complexity and no user interaction required, with a high impact on availability. There is currently no evidence of active exploitation, nor is public exploit code available in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage for this CVE are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
>= 12.1, < 12.1-61.18CPE matchmatch criteria
cpe:2.3:a:citrix:gateway:*:*:*:*:*:*:*:*
>= 13.0, < 13.0-76.29CPE matchmatch criteria
cpe:2.3:a:citrix:gateway:*:*:*:*:*:*:*:*
>= 11.1, < 11.1-65.20CPE matchmatch criteria
cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*
>= 11.1, < 11.1-65.20CPE matchmatch criteria
cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:*
>= 12.1, < 12.1-61.18CPE matchmatch criteria
cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.42%
Probability of exploitation in next 30 days
EPSS Percentile
34.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0042 is in the 52nd percentile among its peer group of 1,802 CVEs.

Social Chatter

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

Vendor Patches (1)

citrixvendor investigatingvia nvd_reference
View patch

References

support.citrix.com / article/CTX297155
Vendor Advisory