Page generated: 08 Nov 2026, 07:04 UTC
← Dashboard

CVE-2019-16759

vBulletin 5.x through 5.5.4 allows remote command execution via the widgetConfig[code] parameter in an ajax/render/widget_php routestring request.

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: 99.73%: +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: 10 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

CloudSEK
Press · 25 Sep 2025, 07:00 · Botnet Loader-as-a-Service Infrastructure Distributing RondoDoX and Mirai Payloads - CloudSEK
ITWeb
Press · 31 Jan 2024, 19:57 · Zero-day vulnerability in vBulletin is exploited - ITWeb
Qualys
Press · 22 Feb 2022, 08:00 · Managing CISA Known Exploited Vulnerabilities with Qualys VMDR - Qualys
Unit 42
Press · 12 Apr 2021, 07:00 · Network Attack Trends: Internet of Threats (November 2020-January 2021) - Unit 42
Unit 42
Press · 22 Jan 2021, 08:00 · Network Attack Trends: Internet of Threats (August-October 2020) - Unit 42
See all 10 source documents
BleepingComputer
Press · 10 Aug 2020, 07:00 · vBulletin fixes ridiculously easy to exploit zero-day RCE bug - BleepingComputer
Microsoft
Press · 04 Feb 2020, 08:00 · Ghost in the shell: Investigating web shell attacks - Microsoft
Unit 42
Press · 09 Oct 2019, 07:00 · Exploits in the Wild for vBulletin Pre-Auth RCE Vulnerability CVE-2019-16759 - Unit 42
The Hacker News
Press · 01 Oct 2019, 07:00 · Comodo Forums Hack Exposes 245,000 Users' Data — Recent vBulletin 0-day Used - The Hacker News
The Hacker News
Press · 24 Sep 2019, 07:00 · [Unpatched] Critical 0-Day RCE Exploit for vBulletin Forum Disclosed Publicly - The Hacker News

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

2

Public exploit entries / repo candidates

Source entries and unverified repository candidates are counted separately.

Public exploit evidence
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 99.7%
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 13:58:05.890020+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
First press mention
24 Sep 2019, 07:00
Published
24 Sep 2019, 21:01
Added to the CISA KEV catalog
03 Nov 2021, 00:00
Latest press mention
25 Sep 2025, 07:00
Score calculated
05 Nov 2026, 13:58
PoCs on GitHub
2 repositories