CVE-2023-4967: citrix netscaler_application_delivery_controller
CVSS: 8.2v3.1HighModified
Published 27-10-2023Last modified 27-02-2025
Vulnerability summary
CVE-2023-4967 is a high (CVSS 8.2) vulnerability in citrix netscaler_application_delivery_controller. EPSS estimates a 1.09% chance of exploitation in the next 30 days, higher than 64.8% of scored vulnerabilities.
CVSS score
8.2/10
010
High · v3.1 (CVE.org)EPSS score
1.09%
0%100%
Low · +0.20 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 27-10-2023PublishedVulnerability first disclosed.
- 27-02-2025Last modifiedVulnerability information updated.
Description
Denial of Service in NetScaler ADC and NetScaler Gateway when configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA Virtual Server
CVSS metrics
2 scores · 2 sources · 1 versionHigh 8.2Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:HSources2 sources · 7.5–8.2
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HDiffers
EPSS trend
Probability
1.09%
Chance of exploitation in the next 30 days
Percentile
65%
Versus all other CVEs
30-day change
+0.20 pp
From 0.89% on 20-09-2026
20-09-202620-10-2026
EPSS score1.09%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Citrix2 products
- netscaler_application_delivery_controller≥ 13.0, < 13.0-92.19 | ≥ 13.1, < 13.1-49.15 | ≥ 14.1, < 14.1-8.50 | ≥ 12.1, ≤ 12.1-55.300 | ≥ 13.1, ≤ 13.1-37.164
- netscaler_gateway≥ 13.0, < 13.0-92.19 | ≥ 13.1, < 13.1-49.15 | ≥ 14.1, < 14.1-8.50
Cloud software group2 products
- netscaler adc≥ 14.1, < 8.50 | ≥ 13.1, < 49.15 | ≥ 13.0, < 92.19 | ≥ 13.1-FIPS, < 37.164 | ≥ 12.1-FIPS, < 55.300 | ≥ 12.1-NDcPP, < 55.300
- netscaler gateway≥ 14.1, < 8.50 | ≥ 13.1, < 49.15 | ≥ 13.0, < 92.19
2 vendors · 4 products
References
1 links- support.citrix.com/article/CTX579459/Vendor Advisory