NVD / CVE Program· CNA synology

CVE-2024-4464: Authorization bypass through user-controlled key vulnerability in streaming service in Synology Media Server before 1.4-2680, 2.0.5-3152 and

Noroxi assessment

Priority: Monitor (action score 30/100)

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: 0.55% (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.
Fixed version: Synology Media Server 1.4-2680, 2.0.5-3152, 2.2.0-3325.

Low priority for now. Upgrade to Synology Media Server 1.4-2680, 2.0.5-3152, 2.2.0-3325 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

Authorization bypass through user-controlled key vulnerability in streaming service in Synology Media Server before 1.4-2680, 2.0.5-3152 and 2.2.0-3325 allows remote attackers to read specific files via unspecified vectors.

HighCVSS 7.5 · v3.1—No exploit Fix available

BDU:2024-11482

Published: Dec 18, 2024
Updated: Jun 17, 2026
EPSS: 0.5% · 46th percentile
CWE: CWE-639

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 30 / 40 · 7.5 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.5%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: —
CNA · synology: 7.5; 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

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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.

Vendor	Product	CPE
synology	media server	cpe:2.3:a:synology:media_server

Affected versions

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

synology media serverbefore 1.4-2680
synology media server2.0.0-11050 and later · before 2.0.5-3152
synology media server2.2.0-3324 and later · before 2.2.0-3325

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 Media Server
- before 2.0.5-3152affected · semver
- before 2.2.0-3325affected · semver
- before 1.4-2680affected · semver

Same product

synology: all records

Other highest-scoring records for the same primary product.

CVE-2022-22683Buffer copy without checking size of input ('Classic Buffer Overflow') vulnerability in cgi component in Synology Media Server before 1.8.1-
39Monitor
CVE-2021-33180Improper neutralization of special elements used in an SQL command ('SQL Injection') vulnerability in cgi component in Synology Media Server
39Monitor
CVE-2018-8914SQL injection vulnerability in UPnP DMA in Synology Media Server before 1.7.6-2842 and before 1.4-2654 allows remote attackers to execute ar
39Monitor

Published before and after this one in the same product

← EarlierCVE-2021-34808Jun 17, 2021 · Server-Side Request Forgery (SSRF) vulnerability in cgi component in Synology Media Server before 1.8.3-2881 allows remote attackers to acce
21Monitor
← EarlierCVE-2022-27614Jul 28, 2022 · Exposure of sensitive information to an unauthorized actor vulnerability in web server in Synology Media Server before 1.8.1-2876 allows rem
30Monitor

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
Synology Media Server	1.4-2680	Vendor (CNA)
Synology Media Server	2.0.5-3152	Vendor (CNA)
Synology Media Server	2.2.0-3325	Vendor (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.

TEAM TGLS (Best of the Best 12th) (https://zrr.kr/SWND)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.
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: none
Availability: none

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

Weakness class (CWE)

CWE-639 · Authorization Bypass Through User-Controlled Key

CVSS vector

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

nvd-secondary

Root cause

The endpoint fetches the record by the ID sent in the request, but never checks whether the record belongs to the requesting user.

The bug in code

The whole CWE-639 class

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

Vulnerable

1const invoice = await Invoice.findById(req.params.id);
2res.json(invoice);

Fixed

1const invoice = await Invoice.findOne({
2  id: req.params.id,
3  ownerId: req.user.id,
4});
5if (!invoice) return res.sendStatus(404);
6res.json(invoice);

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

Fix✗ → ✓Sep 28, 2026, 10:11 PM UTC

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References

www.synology.com/en-global/security/advisory/Synology_SA_24_28

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

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