Is CVE-2024-28757 in the CISA KEV catalog?

No. CVE-2024-28757 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2024-28757?

CVE-2024-28757 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2024-28757?

CVE-2024-28757 has an EPSS score of 2.01% (78th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2024-28757?

Upgrade expat on debian 13 to 2.6.1-2 or later. Fixes are available for 19 affected products.

CVE & CISA-KEV Catalog

CVE-2024-28757

HIGHEPSS 78th pctl

7.5

CVSS v3

NVD

Description

libexpat through 2.6.1 allows an XML Entity Expansion attack when there is isolated use of external parsers (created via XML_ExternalEntityParserCreate).

CWE-776

How to fix

Remediation Available

expatDebian

Fixed in:2.6.1-2CVE-2024-28757

expatRocky

Fixed in:0:2.5.0-1.el8_10RHSA-2025:21776

Fixed in:0:2.5.0-1.el9_3.1RHSA-2024:1530

Fixed in:0:2.5.0-1.el9_2.1RHSA-2024:3926

Fixed in:0:2.5.0-2.el9_4RHBA-2024:2518

expatRed Hat / RHEL

Fixed in:0:2.5.0-1.el8_10RHSA-2025:21776

Fixed in:0:2.5.0-1.el9_3.1RHSA-2024:1530

Fixed in:0:2.5.0-2.el9_4RHBA-2024:2518

Fixed in:0:2.5.0-1.el9_3.1RHSA-2024:1530

Fixed in:0:2.5.0-1.el9_2.1RHSA-2024:3926

Fixed in:0:2.5.0-1.el9_3.1RHSA-2024:1530

Fixed in:0:2.5.0-1.el9_2.1RHSA-2024:3926

Fixed in:0:2.5.0-1.el9_3.1RHSA-2024:1530

Fixed in:0:2.5.0-1.el9_2.1RHSA-2024:3926

Fixed in:0:2.5.0-1.el9_3.1RHSA-2024:1530

Fixed in:0:2.5.0-2.el9_4RHBA-2024:2518

Fixed in:0:2.5.0-1.el9_3.1RHSA-2024:1530

expat-debuginfoRocky

Fixed in:0:2.5.0-1.el8_10RHSA-2025:21776

Fixed in:0:2.5.0-1.el9_2.1RHSA-2024:3926

Fixed in:0:2.5.0-2.el9_4RHBA-2024:2518

Fixed in:0:2.5.0-1.el9_3.1RHSA-2024:1530

Fixed in:0:2.5.0-1.el9_2.1RHSA-2024:3926

Fixed in:0:2.5.0-2.el9_4RHBA-2024:2518

Fixed in:0:2.5.0-1.el9_3.1RHSA-2024:1530

Fixed in:0:2.5.0-1.el9_2.1RHSA-2024:3926

Fixed in:0:2.5.0-2.el9_4RHBA-2024:2518

Fixed in:0:2.5.0-1.el9_3.1RHSA-2024:1530

Fixed in:0:2.5.0-1.el9_2.1RHSA-2024:3926

Fixed in:0:2.5.0-1.el9_3.1RHSA-2024:1530

Fixed in:0:2.5.0-2.el9_4RHBA-2024:2518

expat-debuginfoRed Hat / RHEL

Fixed in:0:2.5.0-1.el8_10RHSA-2025:21776

Fixed in:0:2.5.0-1.el9_2.1RHSA-2024:3926

Fixed in:0:2.5.0-2.el9_4RHBA-2024:2518

Fixed in:0:2.5.0-1.el9_2.1RHSA-2024:3926

Fixed in:0:2.5.0-1.el9_3.1RHSA-2024:1530

Fixed in:0:2.5.0-2.el9_4RHBA-2024:2518

Fixed in:0:2.5.0-1.el9_2.1RHSA-2024:3926

Fixed in:0:2.5.0-1.el9_3.1RHSA-2024:1530

Fixed in:0:2.5.0-1.el9_2.1RHSA-2024:3926

Fixed in:0:2.5.0-1.el9_3.1RHSA-2024:1530

Fixed in:0:2.5.0-2.el9_4RHBA-2024:2518

Fixed in:0:2.5.0-1.el9_2.1RHSA-2024:3926

Fixed in:0:2.5.0-1.el9_3.1RHSA-2024:1530

expat-debugsourceRocky

Fixed in:0:2.5.0-1.el8_10RHSA-2025:21776

Fixed in:0:2.5.0-2.el9_4RHBA-2024:2518

Fixed in:0:2.5.0-1.el9_2.1RHSA-2024:3926

Fixed in:0:2.5.0-2.el9_4RHBA-2024:2518

Fixed in:0:2.5.0-1.el9_3.1RHSA-2024:1530

expat-debugsourceRed Hat / RHEL

Fixed in:0:2.5.0-1.el8_10RHSA-2025:21776

Fixed in:0:2.5.0-1.el9_2.1RHSA-2024:3926

Fixed in:0:2.5.0-2.el9_4RHBA-2024:2518

Fixed in:0:2.5.0-1.el9_3.1RHSA-2024:1530

expat-develRed Hat / RHEL

Fixed in:0:2.5.0-1.el8_10RHSA-2025:21776

Fixed in:0:2.5.0-2.el9_4RHBA-2024:2518

Fixed in:0:2.5.0-1.el9_2.1RHSA-2024:3926

Fixed in:0:2.5.0-2.el9_4RHBA-2024:2518

Fixed in:0:2.5.0-1.el9_3.1RHSA-2024:1530

Fixed in:0:2.5.0-1.el9_2.1RHSA-2024:3926

Fixed in:0:2.5.0-1.el9_3.1RHSA-2024:1530

Fixed in:0:2.5.0-2.el9_4RHBA-2024:2518

Fixed in:0:2.5.0-1.el9_3.1RHSA-2024:1530

Fixed in:0:2.5.0-2.el9_4RHBA-2024:2518

expat-develRocky

Fixed in:0:2.5.0-1.el8_10RHSA-2025:21776

Fixed in:0:2.5.0-1.el9_3.1RHSA-2024:1530

Fixed in:0:2.5.0-2.el9_4RHBA-2024:2518

Fixed in:0:2.5.0-1.el9_2.1RHSA-2024:3926

Fixed in:0:2.5.0-1.el9_3.1RHSA-2024:1530

Fixed in:0:2.5.0-1.el9_2.1RHSA-2024:3926

Fixed in:0:2.5.0-1.el9_3.1RHSA-2024:1530

rhcos-aarch64Rocky

Fixed in:4.19.9.6.202604080618-0RHSA-2026:7243

Fixed in:415.92.202603101737-0RHSA-2026:4419

Fixed in:417.94.202603102246-0RHSA-2026:4480

Fixed in:416.94.202603112010-0RHSA-2026:4465

Fixed in:414.92.202603110216-0RHSA-2026:5087

Fixed in:418.94.202603021444-0RHSA-2026:3876

rhcos-aarch64Red Hat / RHEL

Fixed in:415.92.202603101737-0RHSA-2026:4419

Fixed in:417.94.202603102246-0RHSA-2026:4480

Fixed in:416.94.202603112010-0RHSA-2026:4465

Fixed in:4.19.9.6.202604080618-0RHSA-2026:7243

Fixed in:414.92.202603110216-0RHSA-2026:5087

Fixed in:418.94.202603021444-0RHSA-2026:3876

rhcos-ppc64leRed Hat / RHEL

Fixed in:417.94.202603102246-0RHSA-2026:4480

Fixed in:416.94.202603112010-0RHSA-2026:4465

Fixed in:414.92.202603110216-0RHSA-2026:5087

Fixed in:415.92.202603101737-0RHSA-2026:4419

Fixed in:418.94.202603021444-0RHSA-2026:3876

Fixed in:4.19.9.6.202604080618-0RHSA-2026:7243

rhcos-ppc64leRocky

Fixed in:414.92.202603110216-0RHSA-2026:5087

Fixed in:418.94.202603021444-0RHSA-2026:3876

Fixed in:416.94.202603112010-0RHSA-2026:4465

Fixed in:4.19.9.6.202604080618-0RHSA-2026:7243

Fixed in:415.92.202603101737-0RHSA-2026:4419

Fixed in:417.94.202603102246-0RHSA-2026:4480

rhcos-s390xRed Hat / RHEL

Fixed in:418.94.202603021444-0RHSA-2026:3876

Fixed in:414.92.202603110216-0RHSA-2026:5087

Fixed in:417.94.202603102246-0RHSA-2026:4480

Fixed in:415.92.202603101737-0RHSA-2026:4419

Fixed in:4.19.9.6.202604080618-0RHSA-2026:7243

Fixed in:416.94.202603112010-0RHSA-2026:4465

rhcos-s390xRocky

Fixed in:418.94.202603021444-0RHSA-2026:3876

Fixed in:414.92.202603110216-0RHSA-2026:5087

Fixed in:416.94.202603112010-0RHSA-2026:4465

Fixed in:417.94.202603102246-0RHSA-2026:4480

Fixed in:4.19.9.6.202604080618-0RHSA-2026:7243

Fixed in:415.92.202603101737-0RHSA-2026:4419

rhcos-x86_64Red Hat / RHEL

Fixed in:416.94.202603112010-0RHSA-2026:4465

Fixed in:417.94.202603102246-0RHSA-2026:4480

Fixed in:415.92.202603101737-0RHSA-2026:4419

Fixed in:414.92.202603110216-0RHSA-2026:5087

Fixed in:413.92.202604080111-0RHSA-2026:7239

Fixed in:418.94.202603021444-0RHSA-2026:3876

Fixed in:4.19.9.6.202604080618-0RHSA-2026:7243

rhcos-x86_64Rocky

Fixed in:4.19.9.6.202604080618-0RHSA-2026:7243

Fixed in:417.94.202603102246-0RHSA-2026:4480

Fixed in:416.94.202603112010-0RHSA-2026:4465

Fixed in:415.92.202603101737-0RHSA-2026:4419

Fixed in:418.94.202603021444-0RHSA-2026:3876

Fixed in:414.92.202603110216-0RHSA-2026:5087

Fixed in:413.92.202604080111-0RHSA-2026:7239

expatUbuntu

Fixed in:2.4.7-1ubuntu0.3USN-6694-1

Fixed in:2.5.0-2ubuntu0.1USN-6694-1

libexpat1Ubuntu

Fixed in:2.4.7-1ubuntu0.3USN-6694-1

Fixed in:2.5.0-2ubuntu0.1USN-6694-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

2.01%probability of exploitation in 30 days

78thpercentile

Elevated risk: more likely to be exploited than 78% of all known CVEs.

References

Patch3

Third-Party Advisory1

security.netapp.com

Mailing List3

Other references3

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-04.