CVE-2026-49414

ASLR bypass for setuid executables via procctl(2)

HIGH

7.8

CVSS Score

Published: June 27, 2026 at 09:22 AM UTC

Updated: July 1, 2026 at 11:22 PM UTC

1 product affected across 1 vendorFreeBSD

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Severity

HIGH7.8

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

FreeBSD · Freebsd

95%

14.3-RELEASE ≤ v < p1514.4-RELEASE ≤ v < p615.0-RELEASE ≤ v < p1014.3 14.3 p1 14.3 p10 14.3 p11 14.3 p12 14.3 p13 14.3 p14 14.3 p2 14.3 p3 14.3 p4 14.3 p5 14.3 p6 14.3 p7 14.3 p8 14.3 p9 14.3-RELEASE 14.4 14.4 p1 14.4 p2 14.4 p3 14.4 p4 14.4 p5 14.4-RELEASE 15.0 15.0 p1 15.0 p2 15.0 p3 15.0 p4 15.0 p5 15.0 p6 15.0 p7 15.0 p8 15.0 p9 15.0-RELEASE

Affected range stops below p10, so it looks safe — our inference, not a vendor statement

Affected range stops below p15, so it looks safe — our inference, not a vendor statement

Affected range stops below p6, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://security.freebsd.org/advisories/FreeBSD-SA-26:32.elf.asc

References (1)

Vendor Advisory

Source: cverecord

https://security.freebsd.org/advisories/FreeBSD-SA-26:32.elf.asc

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHCISA-ADP

Attack Vector: LOCAL
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusANALYZED

CWE

CWE-179

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