CVE-2026-34631
CVE-2026-34631 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-787.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- EPSS exploit prediction: 0% (4th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-22720
- Weakness: CWE-787
- Affected product: Adobe Incopy
- Published:
- Last modified:
Description
InCopy versions 20.5.2, 21.2 and earlier are affected by an out-of-bounds write 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-2026-34631?
- InCopy versions 20.5.2, 21.2 and earlier are affected by an out-of-bounds write 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-2026-34631?
- CVE-2026-34631 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-2026-34631 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-34631?
- CVE-2026-34631 affects Adobe Incopy. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-34631?
- 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-2026-34631 have an EU (EUVD) identifier?
- Yes. CVE-2026-34631 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-22720.
- When was CVE-2026-34631 published?
- CVE-2026-34631 was published on 2026-04-14 and last updated on 2026-06-17.
References
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-2026-27287 — 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…
- CVE-2026-21281 — High (CVSS 7.8): InCopy versions 21.0, 19.5.5 and earlier are affected by a Heap-based Buffer Overflow vulnerability that could result…
All CVEs affecting Adobe Incopy →
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