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NVD / CVE Program· CNA synology

CVE-2024-5401: Improper control of dynamically-managed code resources vulnerability in WebAPI component in Synology DiskStation Manager (DSM) before 7.1.1-

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: 0.38% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Synology DiskStation Manager (DSM) 7.2.1-69057-2, 7.2.2-72806; Synology Unified Controller (DSMUC) 3.1.4-23079.
  • Severity is disputed: the assigning authority (CNA) scores it 4.3, NVD 8.8.

Low priority for now. Upgrade to Synology DiskStation Manager (DSM) 7.2.1-69057-2, 7.2.2-72806; Synology Unified Controller (DSMUC) 3.1.4-23079 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

Improper control of dynamically-managed code resources vulnerability in WebAPI component in Synology DiskStation Manager (DSM) before 7.1.1-42962-8 and 7.2.1-69057-2 and 7.2.2-72806 and Synology Unified Controller (DSMUC) before 3.1.4-23079 allows remote authenticated users to obtain privileges without consent via unspecified vectors.

HighCVSS 8.8 · v3.1—No exploit Fix available
Published
Dec 4, 2025
Updated
Sep 26, 2026
EPSS
0.3% · 31th 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
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
8.8
CNA · synology
4.3
4.5 point gap

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A: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-2024-5401

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
synologydiskstation manager
synologydiskstation manager unified controller

Affected versions

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

  • synology diskstation manager7.2.1-69057 and later · before 7.2.1-69057-2
  • synology diskstation manager7.2.2-72803 and later · before 7.2.2-72806
  • synology diskstation manager unified controller3.1-23028 and later · before 3.1.4-23079

Versions reported by the vendor

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

  • Synology DiskStation Manager (DSM)

    • 7.2.2 and later · before 7.2.2-72806affected · semver
    • 7.2.1 and later · before 7.2.1-69057-2affected · semver
    • before 7.2.1unknown · semver

  • Synology Unified Controller (DSMUC)

    • 3.1 and later · before 3.1.4-23079affected · semver
    • before 3.1unknown · semver

Same product

synology: all records

Other highest-scoring records for the same primary product.

  • CVE-2013-6955webman/imageSelector.cgi in Synology DiskStation Manager (DSM) 4.0 before 4.0-2259, 4.2 before 4.2-3243, and 4.3 before 4.3-3810 Update 1 al
    65This week
  • CVE-2017-9554An information exposure vulnerability in forget_passwd.cgi in Synology DiskStation Manager (DSM) before 6.1.3-15152 allows remote attackers
    60This week
  • CVE-2017-15889Command injection vulnerability in smart.cgi in Synology DiskStation Manager (DSM) before 5.2-5967-5 allows remote authenticated users to ex
    57Plan

Published before and after this one in the same product

  • ← EarlierCVE-2024-45538Dec 4, 2025 · Cross-Site Request Forgery (CSRF) vulnerability in WebAPI Framework in Synology DiskStation Manager (DSM) before 7.2.1-69057-2 and 7.2.2-728
    38Monitor
  • ← EarlierCVE-2024-45539Dec 4, 2025 · Out-of-bounds write vulnerability in cgi components in Synology DiskStation Manager (DSM) before 7.2.1-69057-2 and 7.2.2-72806 and Synology
    30Monitor
  • Later →CVE-2025-13392May 27, 2026 · Improper check for unusual or exceptional conditions vulnerability in SSO in Synology DiskStation Manager (DSM) before 7.2.2-72806-5 and 7.3
    39Monitor

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
Synology DiskStation Manager (DSM)7.2.1-69057-2Vendor (CNA)
Synology DiskStation Manager (DSM)7.2.2-72806Vendor (CNA)
Synology Unified Controller (DSMUC)3.1.4-23079Vendor (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.

EPSS, last 120 days

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

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.

  • Vo Van ThongGE Security (VNG) (https://www.linkedin.com/in/thongvv3/)finder

Variant candidates

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

No nightly-computed relations.

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

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

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.
  • 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
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-913 · Improper Control of Dynamically-Managed Code Resources

CVSS vector

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

nvd-primary

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✗ → ✓

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