Medium severity5.3NVD Advisory· Published Jun 24, 2025· Updated Jun 17, 2026

CVE-2025-6566

Description

A vulnerability was found in oatpp Oat++ up to 1.3.1. It has been declared as critical. This vulnerability affects the function deserializeArray of the file src/oatpp/json/Deserializer.cpp. The manipulation leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Oatpp/Oat\+\+2 versions
cpe:2.3:a:oatpp:oat\+\+:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:oatpp:oat\+\+:*:*:*:*:*:*:*:*range: <=1.3.1
- (no CPE)range: 1.3.0
Oatpp/Oatppllm-fuzzy
Range: <=1.3.1

Patches

Vulnerability mechanics

References

github.com/oatpp/oatpp/issues/1037nvdExploitIssue Tracking
vuldb.comnvdThird Party AdvisoryVDB Entry
vuldb.comnvdThird Party AdvisoryVDB Entry
vuldb.comnvdPermissions RequiredVDB Entry

News mentions

No linked articles in our index yet.

Severity

MediumCVSS v3.1

5.3/ 10

CVSS v45.5

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/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

Attack vector: Network
Complexity: Low
Privileges: None
User interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: Low

Vector

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

Affected

Source repo: github.com/user-attachments/files/19579448/oatpp_crash.txt

EPSS

Probability of exploitation in the next 30 days.

0.67%

VYPR risk score

Composite of severity, exploitation, and reach.

0.35medium

cvss	0.345
epss	0.001
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000

Weaknesses

CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-121
Stack-based Buffer Overflow
CWE-787
Out-of-bounds Write

CVE ID

CVE-2025-6566

Credits

J(
JJLeo (VulDB User)
reporter