Treck TCP-IP Stack 4.7.1.27/5.0.1.35/6.0.1.28/6.0.1.41 IPv4 integer underflow

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Treck TCP-IP Stack. It has been rated as critical. Affected by this vulnerability is an unknown functionality of the component IPv4 Handler. Performing a manipulation results in integer underflow. This vulnerability is cataloged as CVE-2020-11909. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Treck TCP-IP Stack. It has been classified as critical. This affects an unknown function of the component IPv4 Handler. The manipulation with an unknown input leads to a integer underflow vulnerability. CWE is classifying the issue as CWE-191. The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The Treck TCP/IP stack before 6.0.1.66 has an IPv4 Integer Underflow.

The weakness was shared 06/17/2020 as cisco-sa-treck-ip-stack-JyBQ5G as confirmed advisory (Website). The advisory is shared at tools.cisco.com. This vulnerability is uniquely identified as CVE-2020-11909 since 04/19/2020. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available.

Upgrading to version 6.0.1.66 eliminates this vulnerability.

The entries VDB-156836, VDB-156837, VDB-156838 and VDB-156839 are related to this item. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.2

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Integer underflow
CWE: CWE-191 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: TCP-IP Stack 6.0.1.66

Timelineinfo

04/19/2020 🔍
06/17/2020 +59 days 🔍
06/18/2020 +1 days 🔍
09/30/2025 +1930 days 🔍

Sourcesinfo

Advisory: cisco-sa-treck-ip-stack-JyBQ5G
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2020-11909 (🔍)
GCVE (CVE): GCVE-0-2020-11909
GCVE (VulDB): GCVE-100-156849
See also: 🔍

Entryinfo

Created: 06/18/2020 08:41
Updated: 09/30/2025 18:23
Changes: 06/18/2020 08:41 (41), 06/18/2020 08:46 (17), 10/24/2020 21:59 (1), 09/30/2025 18:23 (18)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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