Signal is active with 1 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
Denial of service via malformed HTTP/2 requests in NetScaler ADC and NetScaler Gateway if HTTP/2 is enabled in HTTP Profile and associated with the virtual server (of type LB, CS, VPN) or the service configured on NetScaler
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
AVAILABLE
Momentum
STABLE
If you run products in this scope, you should treat this CVE as relevant to your environment.
1 version affected across 2 products
| Date | Total | Labels |
|---|
| 2026-06-30 | 1 | Disclosure1 |
| 2026-07-01 | 4 | Disclosure1Patch3 |
| 2026-07-04 | 2 | Patch2 |
| 2026-07-08 | 1 | Disclosure1 |
| 2026-07-25 | 1 | General1 |
🚨🚨🚨 NetScaler ADC and NetScaler Gateway Security Bulletin for CVE-2026-8451, CVE-2026-8452, CVE-2026-8655, CVE-2026-10816, CVE-2026-10817, and CVE-2026-13474 https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696604
Post summary
The tweet announces a Citrix security bulletin covering several CVEs, providing only a link to the advisory without additional details or exploit information.
🚨🚨🚨@cloudsoftware has just issued a security bulletin for @NetScaler 🚨🚨🚨 Severity: *** HIGH *** CVE: CVE-2026-8451 / CVE-2026-8452 / CVE-2026-8655 / CVE-2026-10816 / CVE-2026-10817 / CVE-2026-13474 For more information: https://mailinglist.corelayer.eu/archive/netscaler-security-bulletin-8936
Post summary
The tweet announces a security bulletin from @NetScaler, listing several high‑severity CVEs and a link to a mailing-list archive, but provides no PoC, exploit code, active exploitation details, patch information, or technical specifics.
Citrix NetScaler ADC／Gateway に 6件の脆弱性：メモリ範囲外読み取りと DoS 攻撃の恐れ https://iototsecnews.jp/2026/07/01/citrix-netscaler-adc-and-gateway-flaws-let-attackers-trigger-memory-overread-and-denial-of-service/ 今回の脆弱性は、入力値に対する不十分な検証や、メモリ処理におけるエラーなどが原因となって発生しています。 具体的には CVE-2026-8451／CVE-2026-10817 のようにメモリの範囲外読み取りを引き起こすものや、 CVE-2026-8452／CVE-2026-8655 のようにメモリオーバーフローを招くものがあります。また、認証なしで任意のファイルが読み取れてしまう CVE-2026-10816 や、不適切なメモリ処理によりリソースが枯渇する CVE-2026-13474 も存在します。 コンフィグやプロファイルが有効な場合に悪用される危険があるため、該当するシステムへの迅速なアップデートに加えて設定の変更が必要です。ご利用のチームは、ご注意ください。 #Citrix #NetScalerADC #Vulnerability
Post summary
The article announces six new Citrix NetScaler vulnerabilities that involve memory errors and an authentication bypass, emphasizing the need for immediate updates and configuration changes to mitigate potential exploitation.
CVE-2026-13474: NetScaler ADC and Gateway HTTP/2 Denial of Service Bug - What It Means for Your Business and How to Respond https://hubs.li/Q04qMrHW0
Post summary
The snippet references a new CVE for NetScaler ADC and Gateway involving an HTTP/2 DoS bug but provides no details on exploits, patches, or active usage.
NetScaler ADC and NetScaler Gateway Security Bulletin for CVE-2026-8451, CVE-2026-8452, CVE-2026-8655, CVE-2026-10816, CVE-2026-10817, and CVE-2026-13474 http://dlvr.it/TTM12f #patchmanagement
Post summary
A NetScaler security bulletin is announced for multiple CVEs, indicating the availability of patches or mitigation steps for these vulnerabilities.
Citrix has recently released new updates to fix NetScaler ADC and NetScaler Gateway, where attackers would be able to conduct file reads and/or trigger a Denial-of-Service condition. These updates resolves the following CVEs: -> CVE-2026-8451 -> CVE-2026-8452 -> CVE-2026-8655 -> CVE-2026-10816 -> CVE-2026-10817 -> CVE-2026-13474 Details can be found in the article below. #Cybersecurity #Ransomware #Citrix #CVE #Netscaler https://thehackernews.com/2026/07/citrix-patches-six-netscaler-flaws.html
Post summary
Citrix released patches for six NetScaler vulnerabilities that allow file reads or Denial‑of‑Service; no PoC, exploit code, or active exploitation is reported.
🚨 6 high-severity Citrix NetScaler flaws - CVE-2026-8451 - CVE-2026-8452 - CVE-2026-8655 - CVE-2026-10816 - CVE-2026-10817 - CVE-2026-13474 All six stem from improper memory handling/input validation, enabling DoS and memory overflow. Fixes: - 14.1 → upgrade to 14.1-72.61+ - 13.1 → upgrade to 13.1-63.18+ - FIPS builds → upgrade to corresponding secure versions
Post summary
The tweet announces six high‑severity Citrix NetScaler CVEs, details their memory‑handling flaws, and provides exact patch versions without referencing active exploitation or proof‑of‑concepts.
#Citrix patches 6 high-severity NetScaler ADC/Gateway flaws: unauthenticated file read (CVE-2026-10816), SAML memory overread with recurring root cause (CVE-2026-8451), and HTTP/2 DoS (CVE-2026-13474). No active exploitation confirmed. #ThreatIntel https://t.co/pcwe3f5vkF
Post summary
The tweet announces Citrix’s release of patches for six high‑severity NetScaler ADC/Gateway vulnerabilities, confirms no active exploitation, and provides technical details of each flaw.
Urgent: Citrix just patched 6 NetScaler flaws (CVE-2026-8451, etc.)! 🚨 Critical memory overreads & DoS bugs. One allows unauthenticated file read if management IPs are exposed. No active exploits yet, but patch NOW. The HTTP/2 fix (CVE-2026-13474) needs a manual config change after upgrade . Affected Versions: Upgrade to 14.1-72.61 or 13.1-63.18. Key Action: For CVE-2026-13474, set Http2SmallWndTimeout to 30 seconds if not using Strict Profiles . #Citrix #NetScaler #CyberSecurity #InfoSec #PatchTuesday #CVE20268451 #CVE202613474 #CISO @citrix @TheHackersNews @SecurityWeek @KrebsOnSecurity @sans_isc @campuscodi @SANSInstitute @cshub @malware_traffic @threatpost @screamingseal @hackerfantastic @SwiftOnSecurity @daniel_weber @ErrataRob @briankrebs @daveaitel @mikko @jgamblin @k8kinons @gossithedog @alexjstubbings @joshualeopard @kevinbeaumont @TroyHunt @nixcraft @darkreading
Post summary
Citrix released patches for six NetScaler flaws and urged immediate updates and configuration changes, while noting no active exploitation yet.
5 of 5 entries
| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| App | citrix | netscaler_application_delivery_controller | - | - | - |
| App | citrix | netscaler_application_delivery_controller | - | - | - |
| App | citrix | netscaler_application_delivery_controller | - | - | - |
| App | citrix | netscaler_application_delivery_controller | 14.1-66.68 | - | - |
| App | citrix | netscaler_gateway | - | - | - |