How severe is CVE-2026-27221?

CVE-2026-27221 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2026-27221 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-27221?

CVE-2026-27221 primarily affects Adobe Acrobat Dc. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-27221?

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

Does CVE-2026-27221 have an EU (EUVD) identifier?

Yes. CVE-2026-27221 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10901.

When was CVE-2026-27221 published?

CVE-2026-27221 was published on 2026-03-10 and last updated on 2026-06-17.

CVE-2026-27221

CVE-2026-27221 is a medium-severity vulnerability in Adobe Acrobat Dc with a CVSS 3.x base score of 5.5. 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-295.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-10901
Weakness: CWE-295
Affected product: Adobe Acrobat Dc
Published: 2026-03-10
Last modified: 2026-06-17

Description

Acrobat Reader versions 24.001.30307, 24.001.30308, 25.001.21265 and earlier are affected by an Improper Certificate Validation vulnerability that could result in a Security feature bypass. An attacker could leverage this vulnerability to spoof the identity of a signer. Exploitation of this issue requires user interaction.

Frequently asked questions

What is CVE-2026-27221?: Acrobat Reader versions 24.001.30307, 24.001.30308, 25.001.21265 and earlier are affected by an Improper Certificate Validation vulnerability that could result in a Security feature bypass. An attacker could leverage this vulnerability to spoof the identity of a signer. Exploitation of this issue requires user interaction.
How severe is CVE-2026-27221?: CVE-2026-27221 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2026-27221 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-27221?: CVE-2026-27221 primarily affects Adobe Acrobat Dc. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-27221?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-27221 have an EU (EUVD) identifier?: Yes. CVE-2026-27221 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10901.
When was CVE-2026-27221 published?: CVE-2026-27221 was published on 2026-03-10 and last updated on 2026-06-17.

References

https://helpx.adobe.com/security/products/acrobat/apsb26-26.html

Affected products (3)

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

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