FKIE_CVE-2026-49414

Vulnerability from fkie_nvd - Published: 2026-06-27 10:16 - Updated: 2026-07-01 14:04
Severity
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
The ELF image activator cleared per-process ASLR preference flags for setuid binaries after the code that computes the PIE base address, rather than before. As a result, a user-requested ASLR disable was still in effect at the point where the base address was chosen. An unprivileged local user can disable ASLR for a setuid PIE binary by calling procctl(2) before execve(2). This makes exploitation of any separate memory corruption vulnerability in that binary significantly easier.
References
secteam@freebsd.orghttps://security.freebsd.org/advisories/FreeBSD-SA-26:32.elf.ascVendor Advisory
Impacted products
Vendor Product Version
freebsd freebsd 14.3
freebsd freebsd 14.3
freebsd freebsd 14.3
freebsd freebsd 14.3
freebsd freebsd 14.3
freebsd freebsd 14.3
freebsd freebsd 14.3
freebsd freebsd 14.3
freebsd freebsd 14.3
freebsd freebsd 14.3
freebsd freebsd 14.3
freebsd freebsd 14.3
freebsd freebsd 14.3
freebsd freebsd 14.3
freebsd freebsd 14.3
freebsd freebsd 14.4
freebsd freebsd 14.4
freebsd freebsd 14.4
freebsd freebsd 14.4
freebsd freebsd 14.4
freebsd freebsd 14.4
freebsd freebsd 15.0
freebsd freebsd 15.0
freebsd freebsd 15.0
freebsd freebsd 15.0
freebsd freebsd 15.0
freebsd freebsd 15.0
freebsd freebsd 15.0
freebsd freebsd 15.0
freebsd freebsd 15.0
freebsd freebsd 15.0
To clipboard 

{
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      ],
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    }
  ],
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The ELF image activator cleared per-process ASLR preference flags for setuid binaries after the code that computes the PIE base address, rather than before.  As a result, a user-requested ASLR disable was still in effect at the point where the base address was chosen.\n\nAn unprivileged local user can disable ASLR for a setuid PIE binary by calling procctl(2) before execve(2).  This makes exploitation of any separate memory corruption vulnerability in that binary significantly easier."
    }
  ],
  "id": "CVE-2026-49414",
  "lastModified": "2026-07-01T14:04:23.277",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-49414",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-29T13:04:41.634759Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-06-27T10:16:37.007",
  "references": [
    {
      "source": "secteam@freebsd.org",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://security.freebsd.org/advisories/FreeBSD-SA-26:32.elf.asc"
    }
  ],
  "sourceIdentifier": "secteam@freebsd.org",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-179"
        }
      ],
      "source": "secteam@freebsd.org",
      "type": "Secondary"
    }
  ]
}



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