CVE-2001-1436

CVE-2001-1436 is a medium-severity vulnerability in Dallas Semiconductor Ibutton with a CVSS 2.0 base score of 4.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

Dallas Semiconductor iButton DS1991 returns predictable values when given an incorrect password, which makes it easier for users with physical access to conduct dictionary attacks against the device password.

Frequently asked questions

What is CVE-2001-1436?
Dallas Semiconductor iButton DS1991 returns predictable values when given an incorrect password, which makes it easier for users with physical access to conduct dictionary attacks against the device password.
How severe is CVE-2001-1436?
CVE-2001-1436 has a CVSS 2.0 base score of 4.6, rated medium severity.
Is CVE-2001-1436 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2001-1436?
CVE-2001-1436 affects Dallas Semiconductor Ibutton. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2001-1436?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2001-1436 published?
CVE-2001-1436 was published on 2001-01-18 and last updated on 2026-06-16.

References

Affected products (1)