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NVD / CVE Program· CNA VulnCheck

CVE-2026-67297: FreeRDP before 3.29.0 Resource Exhaustion via chunked HTTP response

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: 0.52% (FIRST EPSS).
  • 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 3.29.0.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to FreeRDP FreeRDP 3.29.0 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 before 3.29.0 fails to enforce the RESPONSE_SIZE_LIMIT when processing Transfer-Encoding: chunked HTTP responses in http_response_recv_body(). Attackers controlling a malicious RD Gateway endpoint can send oversized chunked response bodies to exhaust client memory resources without triggering the configured size limit.

Published
Aug 1, 2026
Updated
Sep 11, 2026
EPSS
0.5% · 44th percentile

Report tools

JSON

Action score

34

Monitor

Low priority for now.

CVSS
34 / 40 · 8.7 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.5%

CISA SSVC decision

Exploitation
proof of concept
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · VulnCheck
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.

Follow CVE-2026-67297

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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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.

VendorProduct
freerdpfreerdp

Versions reported by the vendor

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

  • FreeRDP FreeRDP

    • 3.29.0not affected
    • before 3.29.0affected · semver

Affected versions

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

  • freerdp freerdpbefore 3.29.0

Package-level exposure

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

EcosystemPackageAffected rangeFix
AlmaLinux:10freerdpbefore 2:3.10.3-12.el10_2.102:3.10.3-12.el10_2.10
AlmaLinux:10freerdp-develbefore 2:3.10.3-12.el10_2.102:3.10.3-12.el10_2.10
AlmaLinux:10freerdp-libsbefore 2:3.10.3-12.el10_2.102:3.10.3-12.el10_2.10
AlmaLinux:10freerdp-serverbefore 2:3.10.3-12.el10_2.102:3.10.3-12.el10_2.10
AlmaLinux:10libwinprbefore 2:3.10.3-12.el10_2.102:3.10.3-12.el10_2.10
AlmaLinux:10libwinpr-develbefore 2:3.10.3-12.el10_2.102:3.10.3-12.el10_2.10
Debian:12freerdp2from 0—
Debian:13freerdp3from 0—
Debian:14freerdp3before 3.29.0+dfsg-13.29.0+dfsg-1
Red Hat:enterprise_linux_eus:10.0freerdpbefore 2:3.10.3-3.el10_0.162:3.10.3-3.el10_0.16
Red Hat:enterprise_linux_eus:10.0freerdp-debuginfobefore 2:3.10.3-3.el10_0.162:3.10.3-3.el10_0.16
Red Hat:enterprise_linux_eus:10.0freerdp-debugsourcebefore 2:3.10.3-3.el10_0.162:3.10.3-3.el10_0.16
Red Hat:enterprise_linux_eus:10.0freerdp-develbefore 2:3.10.3-3.el10_0.162:3.10.3-3.el10_0.16
Red Hat:enterprise_linux_eus:10.0freerdp-libsbefore 2:3.10.3-3.el10_0.162:3.10.3-3.el10_0.16
Red Hat:enterprise_linux_eus:10.0freerdp-libs-debuginfobefore 2:3.10.3-3.el10_0.162:3.10.3-3.el10_0.16
Red Hat:enterprise_linux_eus:10.0freerdp-serverbefore 2:3.10.3-3.el10_0.162:3.10.3-3.el10_0.16
Red Hat:enterprise_linux_eus:10.0freerdp-server-debuginfobefore 2:3.10.3-3.el10_0.162:3.10.3-3.el10_0.16
Red Hat:enterprise_linux_eus:10.0libwinprbefore 2:3.10.3-3.el10_0.162:3.10.3-3.el10_0.16
Red Hat:enterprise_linux_eus:10.0libwinpr-debuginfobefore 2:3.10.3-3.el10_0.162:3.10.3-3.el10_0.16
Red Hat:enterprise_linux_eus:10.0libwinpr-develbefore 2:3.10.3-3.el10_0.162:3.10.3-3.el10_0.16
Red Hat:enterprise_linux:10.2freerdpbefore 2:3.10.3-12.el10_2.102:3.10.3-12.el10_2.10
Red Hat:enterprise_linux:10.2freerdp-debuginfobefore 2:3.10.3-12.el10_2.102:3.10.3-12.el10_2.10
Red Hat:enterprise_linux:10.2freerdp-debugsourcebefore 2:3.10.3-12.el10_2.102:3.10.3-12.el10_2.10
Red Hat:enterprise_linux:10.2freerdp-develbefore 2:3.10.3-12.el10_2.102:3.10.3-12.el10_2.10

+8

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-2026-67294Aug 1, 2026 · FreeRDP before 3.29.0 TLS Certificate EKU Bypass
    37Monitor
  • ← EarlierCVE-2026-67296Aug 1, 2026 · FreeRDP before 3.29.0 Denial of Service via RDPEI PDU
    34Monitor
  • Later →CVE-2026-67299Aug 1, 2026 · FreeRDP before 3.29.0 Use-After-Free via WindowIcon async message
    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 / packageFixed versionSource
FreeRDP FreeRDP3.29.0Vendor (CNA)
almalinux:freerdp2:3.10.3-12.el10_2.10 · AlmaLinux:10Package registry (OSV)
almalinux:freerdp-devel2:3.10.3-12.el10_2.10 · AlmaLinux:10Package registry (OSV)
almalinux:freerdp-libs2:3.10.3-12.el10_2.10 · AlmaLinux:10Package registry (OSV)
almalinux:freerdp-server2:3.10.3-12.el10_2.10 · AlmaLinux:10Package registry (OSV)
almalinux:libwinpr2:3.10.3-12.el10_2.10 · AlmaLinux:10Package registry (OSV)
almalinux:libwinpr-devel2:3.10.3-12.el10_2.10 · AlmaLinux:10Package registry (OSV)
debian:freerdp33.29.0+dfsg-1 · Debian:14Package registry (OSV)
red hat:freerdp2:3.10.3-12.el10_2.10 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:freerdp-debuginfo2:3.10.3-12.el10_2.10 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:freerdp-debugsource2:3.10.3-12.el10_2.10 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:freerdp-devel2:3.10.3-12.el10_2.10 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:freerdp-libs2:3.10.3-12.el10_2.10 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:freerdp-libs-debuginfo2:3.10.3-12.el10_2.10 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:freerdp-server2:3.10.3-12.el10_2.10 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:freerdp-server-debuginfo2:3.10.3-12.el10_2.10 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:libwinpr2:3.10.3-12.el10_2.10 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:libwinpr-debuginfo2:3.10.3-12.el10_2.10 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:libwinpr-devel2:3.10.3-12.el10_2.10 · Red Hat:enterprise_linux:10.2Package registry (OSV)
rocky linux:freerdp2:3.10.3-12.el10_2.10 · Rocky Linux:10Package 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.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Variant candidates

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

  • CVE-2026-10994773 days apartFreeRDP 3.20.1 before 3.32.0 Unbounded Allocation via drive_process_irp_read
    28Monitor
  • CVE-2026-12138894 days apartFreeRDP 3.0.0 before 3.32.2 Uncapped Memory Allocation via DRDYNVC DATA_FIRST
    28Monitor
  • CVE-2026-12141294 days apartFreeRDP 3.0.0 before 3.32.2 Proxy Memory Exhaustion via DVC Reassembly
    28Monitor
  • CVE-2026-12139994 days apartFreeRDP before 3.32.2 Memory Exhaustion via RD Gateway Packet Length
    21Monitor
  • CVE-2026-12140394 days apartFreeRDP before 3.32.2 Denial of Service via Malformed Drive IRP
    21Monitor
  • CVE-2026-12140594 days apartFreeRDP before 3.32.2 Memory Exhaustion via Serial RDPDR Device Control
    21Monitor

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Not on record for this CVE: patch commit or PR link · 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-770 · Allocation of Resources Without Limits or Throttling

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

Attack context

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

References

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

All records