How severe is CVE-2026-34626?

CVE-2026-34626 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-34626 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-34626?

CVE-2026-34626 primarily affects Adobe Acrobat. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-34626?

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

Does CVE-2026-34626 have an EU (EUVD) identifier?

Yes. CVE-2026-34626 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-22337.

When was CVE-2026-34626 published?

CVE-2026-34626 was published on 2026-04-14 and last updated on 2026-06-17.

CVE-2026-34626

CVE-2026-34626 is a medium-severity vulnerability in Adobe Acrobat with a CVSS 3.x base score of 6.3. 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-1321.

Key facts

Severity: Medium (CVSS 3.x base score 6.3)
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-22337
Weakness: CWE-1321
Affected product: Adobe Acrobat
Published: 2026-04-14
Last modified: 2026-06-17

Description

Acrobat Reader versions 26.001.21411, 24.001.30360, 24.001.30362 and earlier are affected by an Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') vulnerability that could result in arbitrary file system read 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-2026-34626?: Acrobat Reader versions 26.001.21411, 24.001.30360, 24.001.30362 and earlier are affected by an Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') vulnerability that could result in arbitrary file system read 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-2026-34626?: CVE-2026-34626 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-34626 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-34626?: CVE-2026-34626 primarily affects Adobe Acrobat. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-34626?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-34626 have an EU (EUVD) identifier?: Yes. CVE-2026-34626 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-22337.
When was CVE-2026-34626 published?: CVE-2026-34626 was published on 2026-04-14 and last updated on 2026-06-17.

References

https://helpx.adobe.com/security/products/acrobat/apsb26-44.html

Affected products (3)

cpe:2.3:a:adobe:acrobat:*:*:*:*:classic:*:*:*
cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:*
cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:continuous:*:*:*

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