mruby 3.1.0 bigint.c udiv floating point comparison with incorrect operator

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k1.21

Summaryinfo

A vulnerability was found in mruby 3.1.0. It has been rated as problematic. Affected by this vulnerability is the function udiv of the file bigint.c. The manipulation leads to floating point comparison with incorrect operator. This vulnerability is documented as CVE-2022-4996. The attack can be initiated remotely. Additionally, an exploit exists. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability was found in mruby 3.1.0. It has been rated as problematic. This issue affects the function udiv of the file bigint.c. The manipulation with an unknown input leads to a floating point comparison with incorrect operator vulnerability. Using CWE to declare the problem leads to CWE-1077. The code performs a comparison such as an equality test between two float (floating point) values, but it uses comparison operators that do not account for the possibility of loss of precision. Impacted is availability.

It is possible to read the advisory at huntr.com. The identification of this vulnerability is CVE-2022-4996. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known.

The exploit is available at huntr.com. It is declared as proof-of-concept.

Applying a patch is able to eliminate this problem.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Floating point comparison with incorrect operator
CWE: CWE-1077
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Timelineinfo

08/17/2026 Advisory disclosed
08/17/2026 +0 days VulDB entry created
08/17/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: huntr.com
Status: Confirmed

CVE: CVE-2022-4996 (🔒)
GCVE (CVE): GCVE-0-2022-4996
GCVE (VulDB): GCVE-100-391391
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 08/17/2026 20:51
Changes: 08/17/2026 20:51 (56)
Complete: 🔍
Submitter: jacky2001114
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #877513: mruby 3.1.0 Floating Point Exception (by jacky2001114)

Be aware that VulDB is the high quality source for vulnerability data.

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