← Vulnerability feed

Vulnerability record · CVE-2021-42727 · published 22 November 2021

CVE-2021-42727: Adobe robohelp server out-of-bounds write vulnerability

Adobe · Robohelp Server

Adobe Bridge 11.1.1 (and earlier) is affected by a stack overflow vulnerability due to insecure handling of a crafted file, potentially resulting in arbitrary code execution in the context of the current user. Exploitation requires user interaction in that a victim must open a crafted file in Bridge.

7.8 CVSS 3.1 High EPSS 39% · top 1.4% CWE-787 · Out-of-bounds write
7.8CVSS 3.1 base score, v2 9.3
39%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Adobe Bridge 11.1.1 (and earlier) is affected by a stack overflow vulnerability due to insecure handling of a crafted file, potentially resulting in arbitrary code execution in the context of the current user. Exploitation requires user interaction in that a victim must open a crafted file in Bridge.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://helpx.adobe.com/security/products/bridge/apsb21-94.html Not ApplicableVendor Advisory
https://helpx.adobe.com/security/products/bridge/apsb21-94.html Not ApplicableVendor Advisory

Track CVE-2021-42727 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.3CVE-2009-3068Adobe RoboHelp Server unrestricted file upload enables code executionAdobe RoboHelp Server 8 fails to restrict file uploads through the RoboHelpServer Servlet (robohelp/server). An attacker can upload a Java Archive fi…EPSS 78%analysed8.8CVE-2022-30670Adobe robohelp server improper authorization vulnerabilityRoboHelp Server earlier versions than RHS 11 Update 3 are affected by an Improper Authorization vulnerability which could lead to privilege escalatio…EPSS 1.5%8.8CVE-2021-28588Adobe robohelp server path traversal vulnerabilityAdobe RoboHelp Server version 2019.0.9 (and earlier) is affected by a Path Traversal vulnerability when parsing a crafted HTTP POST request. An authe…EPSS 6.2%7.5CVE-2023-22274Adobe robohelp server xml external entity (xxe) vulnerabilityAdobe RoboHelp Server versions 11.4 and earlier are affected by an Improper Restriction of XML External Entity Reference ('XXE') vulnerability that c…EPSS 1.5%7.5CVE-2023-22275Adobe robohelp server sql injection vulnerabilityAdobe RoboHelp Server versions 11.4 and earlier are affected by an Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection…EPSS 1.3%7.5CVE-2023-22272Adobe robohelp server improper input validation vulnerabilityAdobe RoboHelp Server versions 11.4 and earlier are affected by an Improper Input Validation vulnerability that could lead to information disclosure …EPSS 1.4%7.2CVE-2023-22273Adobe robohelp server path traversal vulnerabilityAdobe RoboHelp Server versions 11.4 and earlier are affected by an Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vul…EPSS 1.9%6.5CVE-2023-22268Adobe robohelp server sql injection vulnerabilityAdobe RoboHelp Server versions 11.4 and earlier are affected by an Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection…EPSS 1.2%

Source: NIST National Vulnerability Database (record CVE-2021-42727), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.