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CVE.org (no NVD analysis yet)· CNA VulnCheck

CVE-2026-110837: FreeRDP 2.0.0 before 3.32.0 Heap Buffer Overflow via MP3 Audio Decoding

MediumCVSS 6.1 · v4.0—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 24/100)

  • 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: 0.37% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. Special conditions such as timing or configuration are required.
  • Fixed version: FreeRDP FreeRDP 3.32.0.

Low priority for now. Upgrade to FreeRDP FreeRDP 3.32.0 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 2.0.0 before 3.32.0, when built with WITH_LAME=ON and WITH_DSP_FFMPEG=OFF, has a heap-based buffer overflow in freerdp_dsp_decode_mp3 because the right-channel PCM pointer is offset by a byte count treated as short elements. A malicious RDP server can send MP3 audio over rdpsnd so decoded samples cross the heap allocation, crashing the client.

Published
Oct 14, 2026
Updated
Oct 23, 2026
EPSS
0.3% · 31th percentile

Report tools

JSON

Action score

24

Monitor

Low priority for now.

CVSS
24 / 40 · 6.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CISA SSVC decision

Exploitation
proof of concept
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · VulnCheck
6.1
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:H/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-2026-110837

When you'll hear from us

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  • 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

    • 3.32.0not affected
    • 2.0.0 and later · before 3.32.0affected · semver

Affected versions

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

  • freerdp freerdp2.0.0 and later · before 3.32.0

Package-level exposure

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

EcosystemPackageAffected rangeFix
AlmaLinux:10freerdpbefore 2:3.32.2-1.el10_22:3.32.2-1.el10_2
AlmaLinux:10freerdp-develbefore 2:3.32.2-1.el10_22:3.32.2-1.el10_2
AlmaLinux:10freerdp-libsbefore 2:3.32.2-1.el10_22:3.32.2-1.el10_2
AlmaLinux:10freerdp-serverbefore 2:3.32.2-1.el10_22:3.32.2-1.el10_2
AlmaLinux:10libwinprbefore 2:3.32.2-1.el10_22:3.32.2-1.el10_2
AlmaLinux:10libwinpr-develbefore 2:3.32.2-1.el10_22:3.32.2-1.el10_2
AlmaLinux:8freerdpbefore 2:2.11.7-15.el8_102:2.11.7-15.el8_10
AlmaLinux:8freerdp-develbefore 2:2.11.7-15.el8_102:2.11.7-15.el8_10
AlmaLinux:8freerdp-libsbefore 2:2.11.7-15.el8_102:2.11.7-15.el8_10
AlmaLinux:8libwinprbefore 2:2.11.7-15.el8_102:2.11.7-15.el8_10
AlmaLinux:8libwinpr-develbefore 2:2.11.7-15.el8_102:2.11.7-15.el8_10
AlmaLinux:9freerdpbefore 2:2.11.7-7.el9_8.92:2.11.7-7.el9_8.9
AlmaLinux:9freerdp-develbefore 2:2.11.7-7.el9_8.92:2.11.7-7.el9_8.9
AlmaLinux:9freerdp-libsbefore 2:2.11.7-7.el9_8.92:2.11.7-7.el9_8.9
AlmaLinux:9libwinprbefore 2:2.11.7-7.el9_8.92:2.11.7-7.el9_8.9
AlmaLinux:9libwinpr-develbefore 2:2.11.7-7.el9_8.92:2.11.7-7.el9_8.9
Debian:12freerdp2from 0—
Debian:13freerdp3from 0—
Debian:14freerdp3before 3.32.0+dfsg-13.32.0+dfsg-1
Rocky Linux:10freerdpbefore 2:3.32.2-1.el10_22:3.32.2-1.el10_2
Rocky Linux:8freerdpbefore 2:2.11.7-15.el8_102:2.11.7-15.el8_10
Rocky Linux:9freerdpbefore 2:2.11.7-7.el9_8.92:2.11.7-7.el9_8.9

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-2026-110835Oct 14, 2026 · FreeRDP 3.0.0 before 3.32.0 HTTP Header Injection via Proxy Routing Token
    25Monitor
  • ← EarlierCVE-2026-110836Oct 14, 2026 · FreeRDP 3.0.0 before 3.32.0 Infinite Loop DoS via Gateway Content-Type
    28Monitor
  • Later →CVE-2026-110838Oct 14, 2026 · FreeRDP shadow before 3.32.0 Pre-Authentication Input Injection via Confirm Active bypass
    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 FreeRDP3.32.0Vendor (CNA)
almalinux:freerdp2:2.11.7-7.el9_8.9 · AlmaLinux:9Package registry (OSV)
almalinux:freerdp-devel2:2.11.7-7.el9_8.9 · AlmaLinux:9Package registry (OSV)
almalinux:freerdp-libs2:2.11.7-7.el9_8.9 · AlmaLinux:9Package registry (OSV)
almalinux:freerdp-server2:3.32.2-1.el10_2 · AlmaLinux:10Package registry (OSV)
almalinux:libwinpr2:2.11.7-7.el9_8.9 · AlmaLinux:9Package registry (OSV)
almalinux:libwinpr-devel2:2.11.7-7.el9_8.9 · AlmaLinux:9Package registry (OSV)
debian:freerdp33.32.0+dfsg-1 · Debian:14Package registry (OSV)
rocky linux:freerdp2:2.11.7-7.el9_8.9 · Rocky Linux:9Package 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.

  1. Published
  2. Fix recordedsame day
  3. TodayNov 13, 2026+29 d
EPSS, last 120 days

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

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

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

  • CVE-2026-31883215 days apartFreeRDP has a `size_t` underflow in ADPCM decoder leads to heap-buffer-overflow write
    39Monitor
  • CVE-2026-6730574 days apartFreeRDP Windows Client before 3.29.0 Heap Buffer Overflow via Cliprdr
    37Monitor
  • CVE-2026-6462086 days apartFreeRDP before 3.28.0 Heap Buffer Overflow via crypto_rsa_common
    37Monitor
  • CVE-2026-31806215 days apartFreeRDP has a Heap Buffer Overflow in nsc_process_message() via Unchecked SURFACE_BITS_COMMAND Bitmap Dimensions
    37Monitor
  • CVE-2026-44420138 days apartFreeRDP cliprdr server heap-buffer-overflow via undersized capabilitySetLength in CB_CLIP_CAPS
    36Monitor
  • CVE-2026-44421138 days apartFreeRDP RDPGFX CacheToSurface heap-buffer-overflow via clamped-rectangle validation bypass
    35Monitor

Not on record for this CVE: patch commit or PR link · public bounty program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
Integrity
Availability
Attack vector
Network
Attack complexity
High
Privileges required
Low
User interaction
None
Scope
X

Weakness class (CWE)

CWE-122 · Heap-based Buffer Overflow

CVSS vector

CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:H/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.

ATT&CK techniques

—

Change log

  1. SSVC exploitation— → poc
  2. Exploit maturity— → none
  3. Fix✗ → ✓

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

References

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

All records