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Fencer Intel
high 7.8

CVE-2021-27097 json

The boot loader in Das U-Boot before 2021.04-rc2 mishandles a modified FIT.

published 5y ago modified 4mo ago also EUVD-2021-13868

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 64%
public exploits
0
none known

Summary

The boot loader in Das U-Boot before 2021.04-rc2 mishandles a modified FIT.

Patch / fix

  • u-boot Debian 14, Debian 13, Debian 12 2021.07+dfsg-2

debian advisories DEBIAN-CVE-2021-27097

  • u-boot Alpine 3.24, Alpine 3.23, Alpine 3.22 +8 more 2021.04-r0

alpine advisories ALPINE-CVE-2021-27097

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Is CVE-2021-27097 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Exploit prediction

1.06% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 7.8 CVSS:3.1/AC:L/AV:L/A:H/C:H/I:H/PR:N/S:U/UI:R
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.