NVD / CVE Program· CNA GitHub_M

CVE-2026-24678: FreeRDP has a Heap-use-after-free in cam_v4l_stream_capture_thread

HighCVSS 8.7 · v4.0—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 34/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.70% (FIRST EPSS); higher than 53.7% of all records.
Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
According to CISA the attack is automatable: targets can be found by mass scanning.
Fixed version: FreeRDP FreeRDP 3.22.0.

Low priority for now. Upgrade to FreeRDP FreeRDP 3.22.0 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.22.0, A capture thread sends sample responses using a freed channel callback after a device channel close, leading to a use after free in ecam_channel_write. This vulnerability is fixed in 3.22.0.

Published: Feb 9, 2026
Updated: Jul 15, 2026
EPSS: 0.7% · 53th percentile
CWE: CWE-416

Report tools

JSON

Action score

Monitor

Low priority for now.

CVSS: 34 / 40 · 8.7 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.7%

CISA SSVC decision

Exploitation: none
Automatable: yes
Technical impact: partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: —
CNA · GitHub_M: 8.7; NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
freerdp	freerdp	cpe:2.3:a:freerdp:freerdp

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

FreeRDP FreeRDP
- < 3.22.0affected

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

freerdp freerdpbefore 3.22.0

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Ecosystem	Package	Affected range	Fix
AlmaLinux:10	freerdp	before 2:3.10.3-5.el10_1.2	2:3.10.3-5.el10_1.2
AlmaLinux:10	freerdp-devel	before 2:3.10.3-5.el10_1.2	2:3.10.3-5.el10_1.2
AlmaLinux:10	freerdp-libs	before 2:3.10.3-5.el10_1.2	2:3.10.3-5.el10_1.2
AlmaLinux:10	freerdp-server	before 2:3.10.3-5.el10_1.2	2:3.10.3-5.el10_1.2
AlmaLinux:10	libwinpr	before 2:3.10.3-5.el10_1.2	2:3.10.3-5.el10_1.2
AlmaLinux:10	libwinpr-devel	before 2:3.10.3-5.el10_1.2	2:3.10.3-5.el10_1.2
Alpine:v3.23	freerdp	before 3.22.0-r0	3.22.0-r0
Debian:12	freerdp2	from 0	—
Debian:13	freerdp3	before 3.15.0+dfsg-2.1+deb13u1	3.15.0+dfsg-2.1+deb13u1
Debian:14	freerdp3	before 3.22.0+dfsg-1	3.22.0+dfsg-1
openSUSE:Tumbleweed	freerdp	before 3.22.0-1.1	3.22.0-1.1
Red Hat:enterprise_linux_eus:10.0	freerdp	before 2:3.10.3-3.el10_0.2	2:3.10.3-3.el10_0.2
Red Hat:enterprise_linux_eus:10.0	freerdp-debuginfo	before 2:3.10.3-3.el10_0.2	2:3.10.3-3.el10_0.2
Red Hat:enterprise_linux_eus:10.0	freerdp-debugsource	before 2:3.10.3-3.el10_0.2	2:3.10.3-3.el10_0.2
Red Hat:enterprise_linux_eus:10.0	freerdp-devel	before 2:3.10.3-3.el10_0.2	2:3.10.3-3.el10_0.2
Red Hat:enterprise_linux_eus:10.0	freerdp-libs	before 2:3.10.3-3.el10_0.2	2:3.10.3-3.el10_0.2
Red Hat:enterprise_linux_eus:10.0	freerdp-libs-debuginfo	before 2:3.10.3-3.el10_0.2	2:3.10.3-3.el10_0.2
Red Hat:enterprise_linux_eus:10.0	freerdp-server	before 2:3.10.3-3.el10_0.2	2:3.10.3-3.el10_0.2
Red Hat:enterprise_linux_eus:10.0	freerdp-server-debuginfo	before 2:3.10.3-3.el10_0.2	2:3.10.3-3.el10_0.2
Red Hat:enterprise_linux_eus:10.0	libwinpr	before 2:3.10.3-3.el10_0.2	2:3.10.3-3.el10_0.2
Red Hat:enterprise_linux_eus:10.0	libwinpr-debuginfo	before 2:3.10.3-3.el10_0.2	2:3.10.3-3.el10_0.2
Red Hat:enterprise_linux_eus:10.0	libwinpr-devel	before 2:3.10.3-3.el10_0.2	2:3.10.3-3.el10_0.2
Red Hat:enterprise_linux:10.1	freerdp	before 2:3.10.3-5.el10_1.2	2:3.10.3-5.el10_1.2
Red Hat:enterprise_linux:10.1	freerdp-debuginfo	before 2:3.10.3-5.el10_1.2	2:3.10.3-5.el10_1.2

+22

Same product

freerdp: all records

Other highest-scoring records for the same primary product.

CVE-2018-8787FreeRDP prior to version 2.0.0-rc4 contains an Integer Overflow that leads to a Heap-Based Buffer Overflow in function…
42Plan
CVE-2018-8788FreeRDP prior to version 2.0.0-rc4 contains an Out-Of-Bounds Write of up to 4 bytes in function nsc_rle_decode() that results in a memory…
41Plan
CVE-2018-8786FreeRDP prior to version 2.0.0-rc4 contains an Integer Truncation that leads to a Heap-Based Buffer Overflow in function…
41Plan

Published before and after this one in the same product

← EarlierCVE-2026-24676Feb 9, 2026 · FreeRDP has a heap-use-after-free in audio_format_compatible
30Monitor
← EarlierCVE-2026-24677Feb 9, 2026 · FreeRDP has a heap-buffer-overflow in ecam_encoder_compress_h264
34Monitor
Later →CVE-2026-24679Feb 9, 2026 · FreeRDP has a heap-buffer-overflow in urb_select_interface
34Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
FreeRDP FreeRDP	3.22.0 · description	Vendor (CNA)
almalinux:freerdp	2:3.10.3-5.el10_1.2 · AlmaLinux:10	Package registry (OSV)
almalinux:freerdp-devel	2:3.10.3-5.el10_1.2 · AlmaLinux:10	Package registry (OSV)
almalinux:freerdp-libs	2:3.10.3-5.el10_1.2 · AlmaLinux:10	Package registry (OSV)
almalinux:freerdp-server	2:3.10.3-5.el10_1.2 · AlmaLinux:10	Package registry (OSV)
almalinux:libwinpr	2:3.10.3-5.el10_1.2 · AlmaLinux:10	Package registry (OSV)
almalinux:libwinpr-devel	2:3.10.3-5.el10_1.2 · AlmaLinux:10	Package registry (OSV)
alpine:freerdp	3.22.0-r0 · Alpine:v3.23	Package registry (OSV)
debian:freerdp3	3.15.0+dfsg-2.1+deb13u1 · Debian:13	Package registry (OSV)
opensuse:freerdp	3.22.0-1.1 · openSUSE:Tumbleweed	Package registry (OSV)
red hat:freerdp	2:3.10.3-12.el10_2.2 · Red Hat:enterprise_linux:10.2	Package registry (OSV)
red hat:freerdp-debuginfo	2:3.10.3-12.el10_2.2 · Red Hat:enterprise_linux:10.2	Package registry (OSV)
red hat:freerdp-debugsource	2:3.10.3-12.el10_2.2 · Red Hat:enterprise_linux:10.2	Package registry (OSV)
red hat:freerdp-devel	2:3.10.3-12.el10_2.2 · Red Hat:enterprise_linux:10.2	Package registry (OSV)
red hat:freerdp-libs	2:3.10.3-12.el10_2.2 · Red Hat:enterprise_linux:10.2	Package registry (OSV)
red hat:freerdp-libs-debuginfo	2:3.10.3-12.el10_2.2 · Red Hat:enterprise_linux:10.2	Package registry (OSV)
red hat:freerdp-server	2:3.10.3-12.el10_2.2 · Red Hat:enterprise_linux:10.2	Package registry (OSV)
red hat:freerdp-server-debuginfo	2:3.10.3-12.el10_2.2 · Red Hat:enterprise_linux:10.2	Package registry (OSV)
red hat:libwinpr	2:3.10.3-12.el10_2.2 · Red Hat:enterprise_linux:10.2	Package registry (OSV)
red hat:libwinpr-debuginfo	2:3.10.3-12.el10_2.2 · Red Hat:enterprise_linux:10.2	Package registry (OSV)
red hat:libwinpr-devel	2:3.10.3-12.el10_2.2 · Red Hat:enterprise_linux:10.2	Package registry (OSV)
rocky linux:freerdp	2:3.10.3-5.el10_1.2 · Rocky Linux:10	Package registry (OSV)
suse:freerdp	3.10.3-150700.3.6.1 · SUSE:Linux Enterprise Module for Package Hub 15 SP7	Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

FreeRDP/FreeRDPcommit f3ab1a1

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

CVE-2026-121953268 days apartFreeRDP before 3.32.2 Use-After-Free via rdpgfx Dynamic Virtual Channel Close
37Monitor
CVE-2026-246770 days apartFreeRDP has a heap-buffer-overflow in ecam_encoder_compress_h264
34Monitor
CVE-2026-246800 days apartFreeRDP has a heap-use-after-free in update_pointer_new(SDL)
34Monitor
CVE-2026-246810 days apartFreeRDP has a heap-use-after-free in urb_bulk_transfer_cb
34Monitor
CVE-2026-246830 days apartFreeRDP has a heap-use-after-free in ainput_send_input_event
34Monitor
CVE-2026-246840 days apartFreeRDP has a Heap-use-after-free in play_thread
34Monitor

Not on record for this CVE: EPSS history · researcher credit · public bounty program.

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is required.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: X

Weakness class (CWE)

CWE-416 · Use After Free

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

nvd-secondary

Root cause

After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.

The bug in code

The whole CWE-416 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1free(dev->buf);
2/* ... another thread is still running ... */
3process(dev->buf);

Fixed

1lock(&dev->lock);
2free(dev->buf);
3dev->buf = NULL;
4unlock(&dev->lock);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log (1)

Fix✗ → ✓Sep 28, 2026, 10:47 PM UTC

For records you follow, these changes also arrive as notifications. →

References

github.com/FreeRDP/FreeRDP/commit/f3ab1a16139036179d9852745fdade18fec11600

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records