How severe is CVE-2025-21156?

CVE-2025-21156 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-21156 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-21156?

CVE-2025-21156 primarily affects Adobe Incopy. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-21156?

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.

Does CVE-2025-21156 have an EU (EUVD) identifier?

Yes. CVE-2025-21156 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-2248.

When was CVE-2025-21156 published?

CVE-2025-21156 was published on 2025-02-11 and last updated on 2026-06-17.

CVE-2025-21156

CVE-2025-21156 is a high-severity vulnerability in Adobe Incopy with a CVSS 3.x base score of 7.8. 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-191.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-2248
Weakness: CWE-191
Affected product: Adobe Incopy
Published: 2025-02-11
Last modified: 2026-06-17

Description

InCopy versions 20.0, 19.5.1 and earlier are affected by an Integer Underflow (Wrap or Wraparound) 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-2025-21156?: InCopy versions 20.0, 19.5.1 and earlier are affected by an Integer Underflow (Wrap or Wraparound) 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-2025-21156?: CVE-2025-21156 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-21156 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-21156?: CVE-2025-21156 primarily affects Adobe Incopy. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-21156?: 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.
Does CVE-2025-21156 have an EU (EUVD) identifier?: Yes. CVE-2025-21156 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-2248.
When was CVE-2025-21156 published?: CVE-2025-21156 was published on 2025-02-11 and last updated on 2026-06-17.

References

https://helpx.adobe.com/security/products/incopy/apsb25-10.html

Affected products (2)

cpe:2.3:a:adobe:incopy:*:*:*:*:*:*:*:*
cpe:2.3:a:adobe:incopy:20.0:*:*:*:*:*:*:*

More vulnerabilities in Adobe Incopy

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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…
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CVE-2026-37534 — Critical (CVSS 9.8): Integer underflow vulnerability in Open-SAE-J1939 thru commit b6caf884df46435e539b1ecbf92b6c29b345bdfe (2025-11-30) in…
CVE-2025-52471 — Critical (CVSS 9.8): ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. An integer underflow vulnerability has been…
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CVE-2024-47606 — Critical (CVSS 9.8): GStreamer is a library for constructing graphs of media-handling components. An integer underflow has been detected in…

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