How severe is CVE-2026-24677?

CVE-2026-24677 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.

Is CVE-2026-24677 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-24677?

CVE-2026-24677 affects Freerdp. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-24677?

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

Does CVE-2026-24677 have an EU (EUVD) identifier?

Yes. CVE-2026-24677 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-6483.

When was CVE-2026-24677 published?

CVE-2026-24677 was published on 2026-02-09 and last updated on 2026-06-17.

CVE-2026-24677

CVE-2026-24677 is a critical-severity vulnerability in Freerdp with a CVSS 3.x base score of 9.1. 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-416.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v4: 8.7
EPSS exploit prediction: 0% (39th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-6483
Weakness: CWE-416
Affected product: Freerdp
Published: 2026-02-09
Last modified: 2026-06-17

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.22.0, ecam_encoder_compress_h264 trusts server-controlled dimensions and does not validate the source buffer size, leading to an out-of-bounds read in sws_scale. This vulnerability is fixed in 3.22.0.

Frequently asked questions

What is CVE-2026-24677?: FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.22.0, ecam_encoder_compress_h264 trusts server-controlled dimensions and does not validate the source buffer size, leading to an out-of-bounds read in sws_scale. This vulnerability is fixed in 3.22.0.
How severe is CVE-2026-24677?: CVE-2026-24677 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.
Is CVE-2026-24677 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-24677?: CVE-2026-24677 affects Freerdp. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-24677?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-24677 have an EU (EUVD) identifier?: Yes. CVE-2026-24677 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-6483.
When was CVE-2026-24677 published?: CVE-2026-24677 was published on 2026-02-09 and last updated on 2026-06-17.

References

Affected products (1)

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

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