Vulnerability Database

383,304

Total vulnerabilities in the database

CVE-2010-1646 — todd_miller / sudo

Permissions, Privileges, and Access Controls

The secure path feature in env.c in sudo 1.3.1 through 1.6.9p22 and 1.7.0 through 1.7.2p6 does not properly handle an environment that contains multiple PATH variables, which might allow local users to gain privileges via a crafted value of the last PATH variable.

  • Published: Jun 7, 2010
  • Updated: Sep 13, 2026
  • CVE: CVE-2010-1646
  • Severity: Medium
  • Exploit:
  • CISA KEV:

CVSS v2:

  • Severity: Medium
  • Score: 6.2
  • AV:L/AC:H/Au:N/C:C/I:C/A:C

CWEs:

Software Affected versions
todd_miller / sudo = 1.3.1
todd_miller / sudo = 1.6
todd_miller / sudo = 1.6.1
todd_miller / sudo = 1.6.2
todd_miller / sudo = 1.6.2p1
todd_miller / sudo = 1.6.2p2
todd_miller / sudo = 1.6.2p3
todd_miller / sudo = 1.6.3
todd_miller / sudo = 1.6.3p1
todd_miller / sudo = 1.6.3p2
todd_miller / sudo = 1.6.3p3
todd_miller / sudo = 1.6.3p4
todd_miller / sudo = 1.6.3p5
todd_miller / sudo = 1.6.3p6
todd_miller / sudo = 1.6.3p7
todd_miller / sudo = 1.6.4
todd_miller / sudo = 1.6.4p1
todd_miller / sudo = 1.6.4p2
todd_miller / sudo = 1.6.5
todd_miller / sudo = 1.6.5p1
todd_miller / sudo = 1.6.5p2
todd_miller / sudo = 1.6.6
todd_miller / sudo = 1.6.7
todd_miller / sudo = 1.6.7p1
todd_miller / sudo = 1.6.7p2
todd_miller / sudo = 1.6.7p3
todd_miller / sudo = 1.6.7p4
todd_miller / sudo = 1.6.7p5
todd_miller / sudo = 1.6.8
todd_miller / sudo = 1.6.8p1
todd_miller / sudo = 1.6.8p2
todd_miller / sudo = 1.6.8p3
todd_miller / sudo = 1.6.8p4
todd_miller / sudo = 1.6.8p5
todd_miller / sudo = 1.6.8p6
todd_miller / sudo = 1.6.8p7
todd_miller / sudo = 1.6.8p8
todd_miller / sudo = 1.6.8p9
todd_miller / sudo = 1.6.8p10
todd_miller / sudo = 1.6.8p11
todd_miller / sudo = 1.6.8p12
todd_miller / sudo = 1.6.9
todd_miller / sudo = 1.6.9p1
todd_miller / sudo = 1.6.9p2
todd_miller / sudo = 1.6.9p3
todd_miller / sudo = 1.6.9p4
todd_miller / sudo = 1.6.9p5
todd_miller / sudo = 1.6.9p6
todd_miller / sudo = 1.6.9p7
todd_miller / sudo = 1.6.9p8
todd_miller / sudo = 1.6.9p9
todd_miller / sudo = 1.6.9p10
todd_miller / sudo = 1.6.9p11
todd_miller / sudo = 1.6.9p12
todd_miller / sudo = 1.6.9p13
todd_miller / sudo = 1.6.9p14
todd_miller / sudo = 1.6.9p15
todd_miller / sudo = 1.6.9p16
todd_miller / sudo = 1.6.9p17
todd_miller / sudo = 1.6.9p18
todd_miller / sudo = 1.6.9p19
todd_miller / sudo = 1.6.9p20
todd_miller / sudo = 1.6.9p21
todd_miller / sudo = 1.6.9p22
todd_miller / sudo = 1.7.0
todd_miller / sudo = 1.7.1
todd_miller / sudo = 1.7.2
todd_miller / sudo = 1.7.2p1
todd_miller / sudo = 1.7.2p2
todd_miller / sudo = 1.7.2p3
todd_miller / sudo = 1.7.2p4
todd_miller / sudo = 1.7.2p5
todd_miller / sudo = 1.7.2p6
todd_miller / sudo = 1.7.2p7

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.