How severe is CVE-2021-21070?

CVE-2021-21070 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-21070 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-21070?

CVE-2021-21070 affects Adobe Robohelp. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-21070?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-21070 published?

CVE-2021-21070 was published on 2021-04-19 and last updated on 2026-06-17.

CVE-2021-21070

CVE-2021-21070 is a medium-severity vulnerability in Adobe Robohelp with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-427.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 9.3
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-427
Affected product: Adobe Robohelp
Published: 2021-04-19
Last modified: 2026-06-17

Description

Adobe Robohelp version 2020.0.3 (and earlier) is affected by an uncontrolled search path element vulnerability that could lead to privilege escalation. An attacker with admin permissions to write to the file system could leverage this vulnerability to escalate privileges.

Frequently asked questions

What is CVE-2021-21070?: Adobe Robohelp version 2020.0.3 (and earlier) is affected by an uncontrolled search path element vulnerability that could lead to privilege escalation. An attacker with admin permissions to write to the file system could leverage this vulnerability to escalate privileges.
How severe is CVE-2021-21070?: CVE-2021-21070 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-21070 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-21070?: CVE-2021-21070 affects Adobe Robohelp. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-21070?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-21070 published?: CVE-2021-21070 was published on 2021-04-19 and last updated on 2026-06-17.

References

https://helpx.adobe.com/security/products/robohelp/apsb21-20.html

Affected products (1)

cpe:2.3:a:adobe:robohelp:*:*:*:*:*:*:*:*

More vulnerabilities in Adobe Robohelp

CVE-2013-5327 — Critical (CVSS 10.0): MDBMS.dll in Adobe RoboHelp 10 allows attackers to execute arbitrary code or cause a denial of service (memory…
CVE-2016-1035 — High (CVSS 7.5): Adobe RoboHelp Server 9 before 9.0.1 mishandles SQL queries, which allows attackers to obtain sensitive information via…
CVE-2022-23201 — Medium (CVSS 6.1): Adobe RoboHelp versions 2020.0.7 (and earlier) is affected by a reflected Cross-Site Scripting (XSS) vulnerability. If…
CVE-2017-3105 — Medium (CVSS 6.1): Adobe RoboHelp has an Open Redirect vulnerability. This affects versions before RH12.0.4.460 and RH2017 before…
CVE-2017-3104 — Medium (CVSS 6.1): Adobe RoboHelp has a cross-site scripting (XSS) vulnerability. This affects versions before RH12.0.4.460 and RH2017…
CVE-2016-7891 — Medium (CVSS 6.1): Adobe RoboHelp version 2015.0.3 and earlier, RoboHelp 11 and earlier have an input validation issue that could be used…

All CVEs affecting Adobe Robohelp →

Other CWE-427 (Uncontrolled Search Path Element) vulnerabilities

CVE-2025-4981 — Critical (CVSS 9.9): Mattermost versions 10.5.x <= 10.5.5, 9.11.x <= 9.11.15, 10.8.x <= 10.8.0, 10.7.x <= 10.7.2, 10.6.x <= 10.6.5 fail to…
CVE-2025-69599 — Critical (CVSS 9.8): RayVentory Scan Engine through 12.6 Update 8 allows attackers to gain privileges if they control the value of the PATH…
CVE-2019-25268 — Critical (CVSS 9.8): NREL BEopt 2.8.0.0 contains a DLL hijacking vulnerability that allows attackers to load arbitrary libraries by tricking…
CVE-2023-53959 — Critical (CVSS 9.8): FileZilla Client 3.63.1 contains a DLL hijacking vulnerability that allows attackers to execute malicious code by…
CVE-2025-65741 — Critical (CVSS 9.8): Sublime Text 3 Build 3208 or prior for MacOS is vulnerable to Dylib Injection. An attacker could compile a .dylib file…
CVE-2024-23054 — Critical (CVSS 9.8): An issue in Plone Docker Official Image 5.2.13 (5221) open-source software that could allow for remote code execution…

Browse all CWE-427 (Uncontrolled Search Path Element) vulnerabilities →