Copeland XWEB 300D PRO/XWEB 500D PRO/XWEB 500B PRO up to 1.12.1 stack-based overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.8$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Copeland XWEB 300D PRO, XWEB 500D PRO and XWEB 500B PRO up to 1.12.1. This affects an unknown function. The manipulation leads to stack-based overflow. This vulnerability is referenced as CVE-2026-20797. The attack needs to be initiated within the local network. No exploit is available.

Detailsinfo

A vulnerability was found in Copeland XWEB 300D PRO, XWEB 500D PRO and XWEB 500B PRO up to 1.12.1 and classified as critical. This issue affects an unknown functionality. The manipulation with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A stack based buffer overflow exists in an API route of XWEB Pro version 1.12.1 and prior, enabling unauthenticated attackers to cause stack corruption and a termination of the program.

The weakness was published with Claroty Team82. The advisory is shared at webapps.copeland.com. The identification of this vulnerability is CVE-2026-20797 since 02/05/2026. The exploitation is known to be easy. The attack can only be done within the local network. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 03/01/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.8

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔒

CNA Base Score: 4.3
CNA Vector (icscert): 🔒

CVSSv2info

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

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
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: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

02/05/2026 CVE reserved
02/27/2026 +22 days Advisory disclosed
02/27/2026 +0 days VulDB entry created
03/01/2026 +2 days VulDB entry last update

Sourcesinfo

Advisory: webapps.copeland.com
Organization: Claroty Team82
Status: Confirmed

CVE: CVE-2026-20797 (🔒)
GCVE (CVE): GCVE-0-2026-20797
GCVE (VulDB): GCVE-100-348125

Entryinfo

Created: 02/27/2026 08:01
Updated: 03/01/2026 17:23
Changes: 02/27/2026 08:01 (62), 03/01/2026 17:23 (12)
Complete: 🔍
Cache ID: 216::103

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