How severe is CVE-2021-21010?

CVE-2021-21010 has a CVSS 3.x base score of 7.0, rated high severity. It is exploitable over local access with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-21010 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-21010?

CVE-2021-21010 affects Adobe Incopy. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-21010?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-21010 published?

CVE-2021-21010 was published on 2021-01-13 and last updated on 2026-06-17.

CVE-2021-21010

CVE-2021-21010 is a high-severity vulnerability in Adobe Incopy with a CVSS 3.x base score of 7.0. 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: High (CVSS 3.x base score 7.0)
CVSS v2: 5.1
EPSS exploit prediction: 2% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-427
Affected product: Adobe Incopy
Published: 2021-01-13
Last modified: 2026-06-17

Description

InCopy version 15.1.1 (and earlier) for Windows is affected by an uncontrolled search path vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

Frequently asked questions

What is CVE-2021-21010?: InCopy version 15.1.1 (and earlier) for Windows is affected by an uncontrolled search path vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
How severe is CVE-2021-21010?: CVE-2021-21010 has a CVSS 3.x base score of 7.0, rated high severity. It is exploitable over local access with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-21010 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-21010?: CVE-2021-21010 affects Adobe Incopy. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-21010?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-21010 published?: CVE-2021-21010 was published on 2021-01-13 and last updated on 2026-06-17.

References

https://helpx.adobe.com/security/products/incopy/apsb21-05.html

Affected products (1)

cpe:2.3:a:adobe:incopy:*:*:*:*:*:*:*:*

More vulnerabilities in Adobe Incopy

CVE-2021-21090 — High (CVSS 8.8): Adobe InCopy version 16.0 (and earlier) is affected by an path traversal vulnerability when parsing a crafted file. An…
CVE-2026-34708 — High (CVSS 7.8): InCopy versions 21.3, 20.5.3 and earlier are affected by a Stack-based Buffer Overflow vulnerability that could result…
CVE-2026-34707 — High (CVSS 7.8): InCopy versions 21.3, 20.5.3 and earlier are affected by a Heap-based Buffer Overflow vulnerability that could result…
CVE-2026-34706 — High (CVSS 7.8): InCopy versions 21.3, 20.5.3 and earlier are affected by an out-of-bounds write vulnerability that could result in…
CVE-2026-34631 — High (CVSS 7.8): InCopy versions 20.5.2, 21.2 and earlier are affected by an out-of-bounds write vulnerability that could result in…
CVE-2026-27287 — High (CVSS 7.8): InCopy versions 20.5.2, 21.2 and earlier are affected by an out-of-bounds read vulnerability when parsing a crafted…

All CVEs affecting Adobe Incopy →

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 →