Is CVE-2026-33987 in the CISA KEV catalog?

No. CVE-2026-33987 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-33987?

CVE-2026-33987 has a CVSS v3 base score of 7.1 (HIGH).

What is the EPSS score for CVE-2026-33987?

CVE-2026-33987 has an EPSS score of 0.10% (1th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-33987?

Upgrade freerdp on rhel 10 to 2:3.10.3-3.el10_0.7 or later. Fixes are available for 22 affected products.

CVE & CISA-KEV Catalog

CVE-2026-33987

HIGH

7.1

CVSS v3

NVD

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in persistent_cache_read_entry_v3() in libfreerdp/cache/persistent.c, persistent->bmpSize is updated before winpr_aligned_recalloc(). If realloc fails, bmpSize is inflated while bmpData points to the old buffer. This issue has been patched in version 3.24.2.

CWE-122Heap-based Buffer Overflow CWE-131

How to fix

Remediation Available

freerdpRed Hat / RHEL

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

freerdpRocky

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

freerdp-debuginfoRocky

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

freerdp-debuginfoRed Hat / RHEL

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

freerdp-debugsourceRocky

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

freerdp-debugsourceRed Hat / RHEL

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

freerdp-develRocky

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

freerdp-develRed Hat / RHEL

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

freerdp-libsRed Hat / RHEL

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

freerdp-libsRocky

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

freerdp-libs-debuginfoRocky

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

freerdp-libs-debuginfoRed Hat / RHEL

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

freerdp-serverRocky

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

freerdp-serverRed Hat / RHEL

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

freerdp-server-debuginfoRocky

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

freerdp-server-debuginfoRed Hat / RHEL

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

libwinprRed Hat / RHEL

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

libwinprRocky

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

libwinpr-debuginfoRocky

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

libwinpr-debuginfoRed Hat / RHEL

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

libwinpr-develRed Hat / RHEL

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

libwinpr-develRocky

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

Fixed in:2:3.10.3-5.el10_1.8RHSA-2026:16014

Fixed in:2:3.10.3-12.el10_2.5RHSA-2026:19142

Fixed in:2:3.10.3-3.el10_0.7RHSA-2026:20605

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 VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.10%probability of exploitation in 30 days

1stpercentile

Low risk: more likely to be exploited than 1% of all known CVEs.

References

Patch2

Embed a live status badge for CVE-2026-33987

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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 2026-04-01.