Page generated: 08 Nov 2026, 11:13 UTC
← Dashboard

CVE-2026-3055

Insufficient input validation in NetScaler ADC and NetScaler Gateway when configured as a SAML IDP leading to memory overread

CVSS 9.3 (CRITICAL) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
0.0/10
REALITY · THREAT PRIORITY
8.9/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 9.3: +1.40
  • Fresh EPSS: 91.49%: +0.46

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 30 documents and public datasets.

Hype components

Headline sample (25%)
0/100
Press, 30 days (60%)
0/100
Grounded branding (15%)
0/100
HYPE TOTAL0/100

Sources and documents

watchTowr
Press · 20 Sep 2026, 14:35 · Citrix NetScaler Memory Overread CVE-2026-3055 - watchTowr
Recorded Future
Press · 08 Sep 2026, 07:00 · August 2026 CVE Landscape - Recorded Future
Techzine Global
Press · 07 Sep 2026, 07:00 · Citrix urges prompt NetScaler update - Techzine Global
https://tech-insider.org/
Press · 09 Aug 2026, 07:00 · Citrix NetScaler Flaw CVE-2026-8451: 24-Hour Exploit - https://tech-insider.org/
CSO Online
Press · 03 Jul 2026, 07:00 · New CitrixBleed-like NetScaler flaw sees exploit attempts in the wild - CSO Online
See all 30 source documents
The Hacker News
Press · 01 Jul 2026, 07:00 · Citrix Patches Six NetScaler Flaws Allowing File Read and Denial-of-Service - The Hacker News
watchTowr Labs
Press · 30 Jun 2026, 19:35 · CitrixBleed To Infinity And Beyond (Citrix NetScaler Pre-Auth Memory Overread CVE-2026-8451)
watchTowr Labs
Press · 30 Jun 2026, 07:00 · CitrixBleed To Infinity And Beyond (Citrix NetScaler Pre-Auth Memory Overread CVE-2026-8451) - watchTowr Labs
The Record from Recorded Future News
Press · 31 Mar 2026, 07:00 · CISA tells federal agencies to patch Citrix NetScaler bug by Thursday - The Record from Recorded Future News
Cybersecurity Dive
Press · 30 Mar 2026, 07:00 · Citrix NetScaler products confirmed to be under exploitation - Cybersecurity Dive
Cyber Press
Press · 30 Mar 2026, 07:00 · Hackers Scan Citrix NetScaler Systems Ahead of Suspected CVE-2026-3055 Exploitation - Cyber Press
Infosecurity Magazine
Press · 30 Mar 2026, 07:00 · Critical Citrix NetScaler Vulnerability Exploited in the Wild - Infosecurity Magazine
BleepingComputer
Press · 30 Mar 2026, 07:00 · Critical Citrix NetScaler memory flaw actively exploited in attacks - BleepingComputer
watchTowr Labs
Press · 29 Mar 2026, 20:07 · Please, We Beg, Just One Weekend Free Of Appliances (Citrix NetScaler CVE-2026-3055 Memory Overread Part 2)
watchTowr Labs
Press · 29 Mar 2026, 20:07 · Please, We Beg, Just One Weekend Free Of Appliances (Citrix NetScaler CVE-2026-3055 Memory Overread Part 2)
CyberSecurityNews
Press · 29 Mar 2026, 07:00 · Hackers Probe Citrix NetScaler Instances Ahead of Likely CVE-2026-3055 Exploitation - CyberSecurityNews
BornCity
Press · 29 Mar 2026, 07:00 · Vulnerability CVE-2026-3055 in Citrix NetScaler ADC and Gateway is being exploited - BornCity
watchTowr
Press · 29 Mar 2026, 07:00 · Please, We Beg, Just One Weekend Free Of Appliances (Citrix NetScaler CVE-2026-3055 Memory Overread Part 2) - watchTowr
watchTowr Labs
Press · 28 Mar 2026, 07:00 · The Sequels Are Never As Good, But We're Still In Pain (Citrix NetScaler CVE-2026-3055 Memory Overread) - watchTowr Labs
The Hacker News
Press · 28 Mar 2026, 07:00 · Citrix NetScaler Under Active Recon for CVE-2026-3055 (CVSS 9.3) Memory Overread Bug - The Hacker News
Cybersecurity Dive
Press · 26 Mar 2026, 07:00 · Critical flaw in Citrix NetScaler raises fears of new exploitation wave - Cybersecurity Dive
BornCity
Press · 25 Mar 2026, 07:00 · Critical vulnerabilities in Citrix NetScaler ADC and Gateway (March 2026)Born's Tech and Windows World - BornCity
National Cyber Security Centre
Press · 25 Mar 2026, 07:00 · Vulnerabilities affecting Citrix NetScaler ADC and Citrix NetScaler Gateway - National Cyber Security Centre
The Hacker News
Press · 24 Mar 2026, 07:00 · Citrix Urges Patching Critical NetScaler Flaw Allowing Unauthenticated Data Leaks - The Hacker News
Help Net Security
Press · 24 Mar 2026, 07:00 · Critical NetScaler ADC, Gateway flaw may soon be exploited (CVE-2026-3055) - Help Net Security
Infosecurity Magazine
Press · 24 Mar 2026, 07:00 · Citrix Urges Immediate Patching for Critical NetScaler Vulnerabilities - Infosecurity Magazine
Security Affairs
Press · 24 Mar 2026, 07:00 · Citrix NetScaler critical flaw could leak data, update now - Security Affairs
SecurityWeek
Press · 24 Mar 2026, 07:00 · Critical Citrix NetScaler Vulnerability Poised for Exploitation, Security Firms Warn - SecurityWeek
Arctic Wolf
Press · 23 Mar 2026, 07:00 · Recommendation for CVE‑2026‑3055 - Arctic Wolf
Rapid7
Press · 23 Mar 2026, 07:00 · CVE-2026-3055: Citrix NetScaler ADC and NetScaler Gateway Out-of-Bounds Read - Rapid7

Score evolution

● Hype   ● Reality

Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.

First record: hype 0.0 · reality 8.9 (2026-11-02 15:14). The curve appears once the score changes.

Public exploit evidence

1

Public exploit entries / repo candidates

See 1 repos with metrics
RepositoryStarsForksLanguageUpdated
fevar54/CVE-2026-3055---Citrix-NetScaler-Memory-Overread-PoC12Python31 Mar 2026, 16:13
Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs.

Evidence in context

Confidence in exploitation evidence
Exploitation recorded
Priority basis
Recorded exploitation; CVSS 9.3; EPSS 91.5%
Attention, last 30 days
0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential
network access, no prior privileges, no user interaction.
Observed activity
Exploitation recorded in CISA KEV.
Known scale
Not quantified.
Evidence confidence basis
Trusted exploitation confirmation

Score evaluated: 2026-11-05 14:00:05.726222+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
First press mention
23 Mar 2026, 07:00
Published
23 Mar 2026, 20:21
Added to the CISA KEV catalog
30 Mar 2026, 00:00
Latest press mention
20 Sep 2026, 14:35
Score calculated
05 Nov 2026, 14:00
PoCs on GitHub
1 repositories