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Unrated severityNVD Advisory· Published Dec 1, 2009· Updated Jun 16, 2026

CVE-2009-4128

CVE-2009-4128

Description

GNU GRand Unified Bootloader (GRUB) 2 1.97 only compares the submitted portion of a password with the actual password, which makes it easier for physically proximate attackers to conduct brute force attacks and bypass authentication by submitting a password whose length is 1.

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LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

2
  • GNU/Grub22 versions
    cpe:2.3:a:gnu:grub_2:1.97:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:gnu:grub_2:1.97:*:*:*:*:*:*:*
    • (no CPE)range: =1.97

Patches

Vulnerability mechanics

References

4

News mentions

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