- Description
- Insufficient input validation in NetScaler ADC and NetScaler Gateway when configured as a SAML IDP leading to memory overread
- Source
- 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5
- NVD status
- Analyzed
- Products
- netscaler_application_delivery_controller, netscaler_gateway
CVSS 4.0
- Type
- Secondary
- Base score
- 9.3
- Impact score
- -
- Exploitability score
- -
- Vector string
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Severity
- CRITICAL
CVSS 3.1
- Type
- Primary
- Base score
- 9.8
- Impact score
- 5.9
- Exploitability score
- 3.9
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Severity
- CRITICAL
Data from CISA
- Vulnerability name
- Citrix NetScaler Out-of-Bounds Read Vulnerability
- Exploit added on
- Mar 30, 2026
- Exploit action due
- Apr 2, 2026
- Required action
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5
- CWE-125
- Hype score
- Not currently trending
💡IR/CERT Morning Brief (4/1) 1/ • Priority issues: NetScaler CVE-2026-3055 and BIG-IP APM CVE-2025-53521 • Supply chain follow-up: renewed attention on TeamPCP’s WAV/MsBuild delivery technique • Incident claim: alleged large-scale breach of Spain’s Feníe Energía
@Team_D4rkn3ttz
1 Apr 2026
138 Impressions
0 Retweets
0 Likes
0 Bookmarks
4 Replies
0 Quotes
💡IR/CERT Morning Brief (4/1) • Priority issues: NetScaler CVE-2026-3055 and BIG-IP APM CVE-2025-53521 • Supply chain follow-up: renewed attention on TeamPCP’s WAV/MsBuild delivery technique • Incident claim: alleged large-scale breach of Spain’s Feníe Energía •
@Team_D4rkn3ttz
1 Apr 2026
5 Impressions
0 Retweets
0 Likes
0 Bookmarks
0 Replies
0 Quotes
⚠️Citrix NetScalerの最近の脆弱性に関連する偵察活動が確認される：CVE-2026-3055 🚨CISA、BIG-IP APMシステムのRCE脆弱性（CVE-2025-53521）をKEVカタログに追加 〜サイバーセキュリティ週末の話題〜 https://t.co/1r2usvLTuX
@MachinaRecord
30 Mar 2026
278 Impressions
0 Retweets
0 Likes
0 Bookmarks
0 Replies
0 Quotes
🧵 Doppelschlag bei kritischer Netzwerk-Infrastruktur: CVE-2025-53521 und CVE-2026-3055 bedrohen Tausende Unternehmen **Die vergangenen 48 Stunden haben zwei kritische Schwachstellen in fundamentaler Enterprise-Netzwerk-Infrastruktur ins Rampenlicht gerückt: F5 BIG-... https:
@dirkalthausinv
30 Mar 2026
157 Impressions
0 Retweets
0 Likes
0 Bookmarks
1 Reply
0 Quotes
CitrixBleed happened in 2023. LockBit used it to hit Boeing and ICBC. CitrixBleed2 happened in 2025. Salt Typhoon used it to backdoor a European telecom. Citrix just patched CVE-2026-3055. Same vulnerability class. Same product. CVSS 9.3. No auth required. Rapid7 and watchTowr
@Atarussecurity
27 Mar 2026
105 Impressions
0 Retweets
0 Likes
0 Bookmarks
0 Replies
0 Quotes
Top 5 Trending CVEs: 1 - CVE-2026-27522 2 - CVE-2026-3055 3 - CVE-2025-58718 4 - CVE-2026-20963 5 - CVE-2026-21858 #cve #cvetrends #cveshield #cybersecurity https://t.co/4Fua3CAN6W
@CVEShield
26 Mar 2026
238 Impressions
0 Retweets
2 Likes
0 Bookmarks
0 Replies
0 Quotes
[
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:*",
"matchCriteriaId": "453E034F-91B1-48E0-A0C2-4DE99EA221DB",
"versionEndExcluding": "13.1-37.262",
"versionStartIncluding": "13.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:ndcpp:*:*:*",
"matchCriteriaId": "5C536886-5796-4FB4-BB94-BE34DE32339A",
"versionEndExcluding": "13.1-37.262",
"versionStartIncluding": "13.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:*",
"matchCriteriaId": "E2DFB77E-B610-4FAC-84EB-CAB9D68F16F4",
"versionEndExcluding": "13.1-62.23",
"versionStartIncluding": "13.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:*",
"matchCriteriaId": "F1145E85-5AEC-4584-A385-1DAA2084CD9F",
"versionEndExcluding": "14.1-60.58",
"versionStartIncluding": "14.1",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*",
"matchCriteriaId": "46A54BC1-9EA0-4F74-81D1-48FB04AE4479",
"versionEndExcluding": "13.1-62.23",
"versionStartIncluding": "13.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*",
"matchCriteriaId": "FEA94A98-44D9-4A3A-8713-7A4963CD820B",
"versionEndExcluding": "14.1-60.58",
"versionStartIncluding": "14.1",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
]