NVD / CVE Program· CNA qnap

CVE-2024-27130: A buffer copy without checking size of input vulnerability has been reported to affect several QNAP operating system versions.

HighCVSS 8.8 · v3.1—Proof of concept No fix recorded

Noroxi assessment

Priority: Plan (action score 46/100)

Public proof-of-concept code exists (GitHub); there is no record of exploitation in the wild.
Probability of exploitation in the next 30 days: 37.5% (FIRST EPSS); higher than 98.5% of all records.
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.
According to CISA the attack is automatable: targets can be found by mass scanning.
According to the record, no fixed version is available yet.

Add it to your regular patch cycle. Update when a fix is released; follow the vendor's advisory.

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 buffer copy without checking size of input vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow users to execute code via a network. We have already fixed the vulnerability in the following version: QTS 5.1.7.2770 build 20240520 and later QuTS hero h5.1.7.2770 build 20240520 and later

Memory safety

BDU:2024-03943

Published: May 21, 2024
Updated: Jun 17, 2026
EPSS: 37.5% · 98th percentile
CWE: CWE-120

Report tools

JSON

Action score

Plan

Add it to your regular patch cycle.

CVSS: 35 / 40 · 8.8 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 11 / 30 · 37.5%

CISA SSVC decision

Exploitation: none
Automatable: yes
Technical impact: total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: 8.8
CNA · qnap: 7.2; 1.6 point gap

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

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
Proof of concept exists, no weaponized module
No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Is your version affected? Check it

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
qnap	qts	cpe:2.3:o:qnap:qts
qnap	quts hero	cpe:2.3:o:qnap:quts_hero

Versions reported by the vendor

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

QNAP Systems Inc. QTS
- 5.1.x and later · before 5.1.7.2770 build 20240520affected
QNAP Systems Inc. QuTS hero
- h5.1.x and later · before h5.1.7.2770 build 20240520affected

Affected versions · NVD (20)

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

qnap qts5.1.0.2348
qnap qts5.1.0.2399
qnap qts5.1.0.2418
qnap qts5.1.0.2444
qnap qts5.1.0.2466
qnap qts5.1.1.2491
qnap qts5.1.2.2533
qnap qts5.1.3.2578
qnap qts5.1.4.2596
qnap qts5.1.5.2645
qnap qts5.1.5.2679
qnap qts5.1.6.2722
qnap quts heroh5.1.0.2409
qnap quts heroh5.1.0.2424
qnap quts heroh5.1.0.2453
qnap quts heroh5.1.0.2466
qnap quts heroh5.1.1.2488
qnap quts heroh5.1.2.2534
qnap quts heroh5.1.3.2578
qnap quts heroh5.1.4.2596

Same product

qnap: all records

Other highest-scoring records for the same primary product.

CVE-2020-2509Command Injection Vulnerability in QTS and QuTS heroKEV
79This week
CVE-2018-19949If exploited, this command injection vulnerability could allow remote attackers to run arbitrary commands.KEV
78This week
CVE-2019-7193This improper input validation vulnerability allows remote attackers to inject arbitrary code to the system.KEV
73This week

Published before and after this one in the same product

← EarlierCVE-2024-27128May 21, 2024 · A buffer copy without checking size of input vulnerability has been reported to affect several QNAP operating system versions.
35Monitor
← EarlierCVE-2024-27129May 21, 2024 · A buffer copy without checking size of input vulnerability has been reported to affect several QNAP operating system versions.
35Monitor
Later →CVE-2024-32765Aug 12, 2024 · A vulnerability has been reported to affect Network & Virtual Switch.
16Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

Proof-of-concept repository on GitHub ×3

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
Source	Kind	Date
Proof-of-concept repository on GitHub	3 repositories	2024-05-17 → 2024-12-24

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.

First PoCMay 17, 2024-5 d
PublishedMay 21, 2024
TodayNov 14, 2026+907 d

Credits

All researchers

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

Aliz HammondwatchTowrfinder

Variant candidates

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

CVE-2023-23363242 days apartA buffer copy without checking size of input vulnerability has been reported to affect QNAP operating system.
39Monitor
CVE-2024-271280 days apartA buffer copy without checking size of input vulnerability has been reported to affect several QNAP operating system versions.
35Monitor
CVE-2024-271290 days apartA buffer copy without checking size of input vulnerability has been reported to affect several QNAP operating system versions.
35Monitor
CVE-2023-5036125 days apartA buffer copy without checking size of input vulnerability has been reported to affect several QNAP operating system versions.
35Monitor
CVE-2023-5036225 days apartA buffer copy without checking size of input vulnerability has been reported to affect several QNAP operating system versions.
35Monitor
CVE-2023-5036425 days apartA buffer copy without checking size of input vulnerability has been reported to affect several QNAP operating system versions.
35Monitor

Not on record for this CVE: EPSS history · 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.
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-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

CVSS vector

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

nvd-primary

Root cause

When data is copied, the source length is not compared with the size of the destination buffer. Excess data overwrites adjacent memory.

The bug in code

The whole CWE-120 class

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

Vulnerable

1char buf[256];
2memcpy(buf, pkt->data, pkt->len);

Fixed

1char buf[256];
2if (pkt->len > sizeof(buf)) {
3  return -EINVAL;
4}
5memcpy(buf, pkt->data, pkt->len);

Attack context

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

Attack patterns (CAPEC)

ATT&CK techniques

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Change log (0)

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

www.qnap.com/en/security-advisory/qsa-24-23

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

All records