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NVD / CVE Program· CNA TV

CVE-2025-44016: File Hash Validation Bypass in NomadBranch.exe

Noroxi assessment

Priority: Monitor (action score 35/100)

  • 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: 0.30% (FIRST EPSS).
  • Someone on the same network segment 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: TeamViewer DEX HF-PLTPKG-524, HF-PLTPKG-525, HF-PLTPKG-526.

Low priority for now. Upgrade to TeamViewer DEX HF-PLTPKG-524, HF-PLTPKG-525, HF-PLTPKG-526 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

A vulnerability in TeamViewer DEX Client (former 1E client) - Content Distribution Service (NomadBranch.exe) prior version 25.11 for Windows allows malicious actors to bypass file integrity validation via a crafted request. By providing a valid hash for a malicious file, an attacker can cause the service to incorrectly validate and process the file as trusted, enabling arbitrary code execution under the Nomad Branch service context.

HighCVSS 8.8 · v3.1—No exploit Fix available
Published
Dec 11, 2025
Updated
Oct 8, 2026
EPSS
0.3% · 23th percentile

Report tools

JSON

Action score

35

Monitor

Low priority for now.

CVSS
35 / 40 · 8.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · TV
8.8
NVD has not scored this yet; the score shown is the CNA’s.

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-2025-44016

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
teamviewerdigital employee experience
microsoftwindows

Affected versions

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

  • teamviewer digital employee experiencebefore 25.11

Versions reported by the vendor

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

  • TeamViewer DEX

    • before 25.11.0.29affected
    • up to and including 25.9.0.46affectedfixed in HF-PLTPKG-524
    • up to and including 25.5.0.53affectedfixed in HF-PLTPKG-526
    • up to and including 24.5.0.69affectedfixed in HF-PLTPKG-525

Same product

teamviewer: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-23568Out-of-bounds read vulnerability in Content Distribution Service
    32Monitor
  • CVE-2026-23569Out-of-bounds read vulnerability in Content Distribution Service
    30Monitor
  • CVE-2026-23563Privilege escalation in TeamViewer DEX via DeleteFileByPath instruction
    28Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2025-12687Dec 11, 2025 · Denial-of-Service Vulnerability in NomadBranch.exe
    26Monitor
  • Later →CVE-2025-46266Dec 11, 2025 · Unauthenticated Transmission of Data in NomadBranch.exe
    26Monitor
  • Later →CVE-2025-64986Dec 11, 2025 · Command Injection in 1E-Explorer-TachyonCore-DevicesListeningOnAPort Instruction
    28Monitor

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
TeamViewer DEXHF-PLTPKG-524Vendor (CNA)
TeamViewer DEXHF-PLTPKG-525Vendor (CNA)
TeamViewer DEXHF-PLTPKG-526Vendor (CNA)

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.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

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

No commit or PR link among the references.

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-2025-649860 days apartCommand Injection in 1E-Explorer-TachyonCore-DevicesListeningOnAPort Instruction
    28Monitor
  • CVE-2025-649870 days apartCommand Injection in 1E-Explorer-TachyonCore-CheckSimpleIoC Instruction
    28Monitor
  • CVE-2025-649880 days apartCommand Injection in 1E-Nomad-GetCmContentLocations Instruction
    28Monitor
  • CVE-2025-649890 days apartCommand Injection in 1E-Explorer-TachyonCore-FindFileBySizeAndHash Instruction
    28Monitor
  • CVE-2025-649900 days apartCommand Injection in 1E-Explorer-TachyonCore-LogoffUser Instruction
    28Monitor
  • CVE-2025-649910 days apartCommand Injection in 1E-PatchInsights-Deploy Instruction
    28Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

Technical details

Attack conditions

  • Someone on the same network segment 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
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Adjacent
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-20 · Improper Input Validation

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Change log

  1. 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