Vulnerability Database

382,521

Total vulnerabilities in the database

CVE-2019-9706 — debian / cron

Use After Free

Vixie Cron before the 3.0pl1-133 Debian package allows local users to cause a denial of service (use-after-free and daemon crash) because of a force_rescan_user error.

  • Published: Mar 12, 2019
  • Updated: Sep 11, 2026
  • CVE: CVE-2019-9706
  • Severity: Medium
  • Exploit:
  • CISA KEV:

CVSS v3:

  • Severity: Medium
  • Score: 5.5
  • AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS v2:

  • Severity: Low
  • Score: 2.1
  • AV:L/AC:L/Au:N/C:N/I:N/A:P

CWEs:

Software Affected versions
debian / cron = 3.0
debian / cron = 3.0-pl1
debian / cron = 3.0-pl1-100
debian / cron = 3.0-pl1-101
debian / cron = 3.0-pl1-102
debian / cron = 3.0-pl1-103
debian / cron = 3.0-pl1-104
debian / cron = 3.0-pl1-105
debian / cron = 3.0-pl1-106
debian / cron = 3.0-pl1-107
debian / cron = 3.0-pl1-108
debian / cron = 3.0-pl1-109
debian / cron = 3.0-pl1-110
debian / cron = 3.0-pl1-111
debian / cron = 3.0-pl1-112
debian / cron = 3.0-pl1-113
debian / cron = 3.0-pl1-114
debian / cron = 3.0-pl1-115
debian / cron = 3.0-pl1-116
debian / cron = 3.0-pl1-117
debian / cron = 3.0-pl1-118
debian / cron = 3.0-pl1-119
debian / cron = 3.0-pl1-120
debian / cron = 3.0-pl1-121
debian / cron = 3.0-pl1-122
debian / cron = 3.0-pl1-123
debian / cron = 3.0-pl1-124
debian / cron = 3.0-pl1-124.1
debian / cron = 3.0-pl1-124.2
debian / cron = 3.0-pl1-125
debian / cron = 3.0-pl1-126
debian / cron = 3.0-pl1-127
debian / cron = 3.0-pl1-128
debian / cron = 3.0-pl1-130
debian / cron = 3.0-pl1-131
debian / cron = 3.0-pl1-132
debian / cron = 3.0-pl1-37
debian / cron = 3.0-pl1-38
debian / cron = 3.0-pl1-39
debian / cron = 3.0-pl1-40
debian / cron = 3.0-pl1-41
debian / cron = 3.0-pl1-42
debian / cron = 3.0-pl1-43
debian / cron = 3.0-pl1-44
debian / cron = 3.0-pl1-45
debian / cron = 3.0-pl1-46
debian / cron = 3.0-pl1-47
debian / cron = 3.0-pl1-48
debian / cron = 3.0-pl1-49
debian / cron = 3.0-pl1-50
debian / cron = 3.0-pl1-50.1
debian / cron = 3.0-pl1-50.2
debian / cron = 3.0-pl1-51
debian / cron = 3.0-pl1-53
debian / cron = 3.0-pl1-54
debian / cron = 3.0-pl1-55
debian / cron = 3.0-pl1-56
debian / cron = 3.0-pl1-57
debian / cron = 3.0-pl1-57.2
debian / cron = 3.0-pl1-57.3
debian / cron = 3.0-pl1-58
debian / cron = 3.0-pl1-59
debian / cron = 3.0-pl1-60
debian / cron = 3.0-pl1-61
debian / cron = 3.0-pl1-62
debian / cron = 3.0-pl1-63
debian / cron = 3.0-pl1-64
debian / cron = 3.0-pl1-65
debian / cron = 3.0-pl1-66
debian / cron = 3.0-pl1-67
debian / cron = 3.0-pl1-68
debian / cron = 3.0-pl1-69
debian / cron = 3.0-pl1-70
debian / cron = 3.0-pl1-71
debian / cron = 3.0-pl1-72
debian / cron = 3.0-pl1-73
debian / cron = 3.0-pl1-74
debian / cron = 3.0-pl1-75
debian / cron = 3.0-pl1-76
debian / cron = 3.0-pl1-77
debian / cron = 3.0-pl1-78
debian / cron = 3.0-pl1-79
debian / cron = 3.0-pl1-80
debian / cron = 3.0-pl1-81
debian / cron = 3.0-pl1-82
debian / cron = 3.0-pl1-83
debian / cron = 3.0-pl1-84
debian / cron = 3.0-pl1-85
debian / cron = 3.0-pl1-86
debian / cron = 3.0-pl1-87
debian / cron = 3.0-pl1-88
debian / cron = 3.0-pl1-89
debian / cron = 3.0-pl1-90
debian / cron = 3.0-pl1-91
debian / cron = 3.0-pl1-92
debian / cron = 3.0-pl1-93
debian / cron = 3.0-pl1-94
debian / debian_linux = 8.0
debian / debian_linux = 9.0

Frequently Asked Questions

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.