CVE-2019-16759

Exploitation

Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2021-11-03. Federal remediation due 2022-05-03.

SSVC decision

• ExploitationactiveCISA reports credible evidence of active exploitation.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

99.73% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 100.0% of scored records. A rank, not a probability.

NVD base score

9.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2019-09-24 21:01Z6 YR AGO

Last updated

2025-10-21 23:45Z10 MO AGO

Reserved

2019-09-24

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

• CWE-94Improper Control of Generation of Code ('Code Injection')Base

Data version

5.1

Document digest

4e2af5e2609b84620b9065e2a8281cc919b005b76ca7c2273dbb18c5e8ec7d70

• seclists.orghttps://seclists.org/fulldisclosure/2019/Sep/31x_refsource_MISC
• www.theregister.co.ukhttps://www.theregister.co.uk/2019/09/24/vbulletin_vbug_zeroday/x_refsource_MISC
• arstechnica.comhttps://arstechnica.com/information-technology/2019/09/public-exploit-code-spawns-mass-attacks-against-high-severity-vbulletin-bug/x_refsource_MISC
• packetstormsecurity.comhttp://packetstormsecurity.com/files/154623/vBulletin-5.x-0-Day-Pre-Auth-Remote-Command-Execution.htmlx_refsource_MISC
• packetstormsecurity.comhttp://packetstormsecurity.com/files/154648/vBulletin-5.x-Pre-Auth-Remote-Code-Execution.htmlx_refsource_MISC
• packetstormsecurity.comhttp://packetstormsecurity.com/files/155633/vBulletin-5.5.4-Remote-Command-Execution.htmlx_refsource_MISC
• packetstormsecurity.comhttp://packetstormsecurity.com/files/158830/vBulletin-5.x-Remote-Code-Execution.htmlx_refsource_MISC
• packetstormsecurity.comhttp://packetstormsecurity.com/files/158829/vBulletin-5.x-Remote-Code-Execution.htmlx_refsource_MISC
• seclists.org20200811 Remote Code Execution 0day in vBulletin 5.xhttp://seclists.org/fulldisclosure/2020/Aug/5mailing-listx_refsource_FULLDISC
• packetstormsecurity.comhttp://packetstormsecurity.com/files/158866/vBulletin-5.x-Remote-Code-Execution.htmlx_refsource_MISC
• www.cisa.govhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-16759government-resource