PoC Index

CVE-2021-46143

HIGH 8.1EPSS 3.8%

In doProlog in xmlparse.c in Expat (aka libexpat) before 2.4.3, an integer overflow exists for m_groupSize.

CVSS v3.1
7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v3.1
8.1 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0
6.8 MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:P
EPSS
3.79% chance of exploitation in the next 30 days, 89th percentile
Published
2022-01-06
Updated
2025-05-05

Proof-of-concept exploits (2)

References

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