VulnRadar

Data against noise.

Page generated: 07 Nov 2026, 04:40 UTC

CVE-2019-19781

An issue was discovered in Citrix Application Delivery Controller (ADC) and Gateway 10.5, 11.1, 12.0, 12.1, and 13.0. They allow Directory Traversal.

CVSS 9.8 (CRITICAL) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE

0.0/10

REALITY · THREAT PRIORITY

9.0/10

General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?

Recorded exploitation baseline: +7.00
Technical severity: CVSS 9.8: +1.47
Fresh EPSS: 100.00%: +0.50

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

Sources: 23 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

Qualys

Press · 12 May 2021, 07:00 · Nefilim Ransomware: Tactics, Impact, and Mitigation Strategies - Qualys

Cisco Talos Blog

Press · 15 Apr 2021, 07:00 · Threat Advisory: NSA SVR Advisory Coverage - Cisco Talos Blog

cyfirma

Press · 28 Dec 2020, 08:00 · Incidents, attributions, and exploitation techniques for path traversal flaw in Fortinet FortiOS SSL VPN devices - cyfirma

Google Cloud

Press · 25 Mar 2020, 07:00 · This Is Not a Test: APT41 Initiates Global Intrusion Campaign Using Multiple Exploits - Google Cloud

Kroll

Press · 16 Mar 2020, 07:00 · Citrix Vulnerability Hits Private Sector Hard - The Monitor, Issue 12 - Kroll

See all 23 source documents

BleepingComputer

Press · 28 Jan 2020, 08:00 · Ragnarok Ransomware Targets Citrix ADC, Disables Windows Defender - BleepingComputer

Forbes

Press · 25 Jan 2020, 08:00 · Critical Security Warning As Citrix Hackers Ramp-Up Attacks - Forbes

TechTarget

Press · 24 Jan 2020, 08:00 · Citrix patches vulnerability as ransomware attacks emerge - TechTarget

Google Cloud

Press · 24 Jan 2020, 08:00 · Nice Try: 501 (Ransomware) Not Implemented - Google Cloud

Help Net Security

Press · 23 Jan 2020, 08:00 · IoC Scanner shows if Citrix appliances have been compromised via CVE-2019-19781 - Help Net Security

BleepingComputer

Press · 22 Jan 2020, 08:00 · Citrix Releases Scanner to Detect Hacked Citrix ADC Appliances - BleepingComputer

BleepingComputer

Press · 19 Jan 2020, 08:00 · Citrix Patches CVE-2019-19781 Flaw in Citrix ADC 11.1 and 12.0 - BleepingComputer

Qualys

Press · 17 Jan 2020, 08:00 · Citrix ADC and Gateway Remote Code Execution Vulnerability (CVE-2019-19781) - Qualys

Rapid7

Press · 17 Jan 2020, 08:00 · CVE-2019-19781: Active Exploitation of Citrix NetScaler Details - Rapid7

BleepingComputer

Press · 16 Jan 2020, 08:00 · Dutch Govt Suggests Turning Off Citrix ADC Devices, Mitigations May Fail - BleepingComputer

Unit 42

Press · 16 Jan 2020, 08:00 · Exploits in the Wild for Citrix ADC and Citrix Gateway Directory Traversal Vulnerability CVE-2019-19781 - Unit 42

Google Cloud

Press · 15 Jan 2020, 08:00 · Vigilante Deploying Mitigation for Citrix NetScaler Vulnerability While Maintaining Backdoor | Mandiant - Google Cloud

Google Cloud

Press · 14 Jan 2020, 08:00 · Rough Patch: I Promise It'll Be 200 OK (Citrix ADC CVE-2019-19781) - Google Cloud

Cisco Talos Blog

Press · 13 Jan 2020, 08:00 · New Snort rules protect against recently discovered Citrix vulnerability - Cisco Talos Blog

Help Net Security

Press · 09 Jan 2020, 08:00 · Attackers exploiting critical Citrix ADC, Gateway flaw, company yet to release fixes - Help Net Security

Tripwire

Press · 08 Jan 2020, 08:00 · Citrix NetScaler CVE-2019-19781: What You Need to Know - Tripwire

TechTarget

Press · 06 Jan 2020, 08:00 · Citrix ADC vulnerability discovered, temporary fix released - TechTarget

BleepingComputer

Press · 23 Dec 2019, 08:00 · Critical Citrix Flaw May Expose Thousands of Firms to Attacks - BleepingComputer

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 9.0 (2026-11-02 15:12). The curve appears once the score changes.

Public exploit evidence

Public exploit entries / repo candidates

See 3 repos with metrics

Repository	Language	Updated
darren646/CVE-2019-19781POC	—	20 Apr 2020, 08:33
hyunjin0334/CVE-2019-19781	—	27 Apr 2025, 11:47
qiong-qi/CVE-2019-19781-poc	Python	09 Jul 2020, 14:30

Public exploit evidence

exploitdb #47901 2020-01-11
exploitdb #47913 2020-01-13
exploitdb #47930 2020-01-16

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 9.8; EPSS 100.0%
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 13:58:06.921295+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline

First press mention

23 Dec 2019, 08:00

Published

27 Dec 2019, 13:06

Latest press mention

12 May 2021, 07:00

Added to the CISA KEV catalog

03 Nov 2021, 00:00

Score calculated

05 Nov 2026, 13:58

PoCs on GitHub

3 repositories