How severe is CVE-2026-33987?

CVE-2026-33987 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2026-33987 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-33987?

CVE-2026-33987 affects Freerdp. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-33987?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-33987 have an EU (EUVD) identifier?

Yes. CVE-2026-33987 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17235.

When was CVE-2026-33987 published?

CVE-2026-33987 was published on 2026-03-30 and last updated on 2026-06-17.

CVE-2026-33987

CVE-2026-33987 is a high-severity vulnerability in Freerdp with a CVSS 3.x base score of 7.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-122.

Key facts

Severity: High (CVSS 3.x base score 7.1)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-17235
Weakness: CWE-122
Affected product: Freerdp
Published: 2026-03-30
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-33987?: 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.
How severe is CVE-2026-33987?: CVE-2026-33987 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2026-33987 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-33987?: CVE-2026-33987 affects Freerdp. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-33987?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-33987 have an EU (EUVD) identifier?: Yes. CVE-2026-33987 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17235.
When was CVE-2026-33987 published?: CVE-2026-33987 was published on 2026-03-30 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*

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