Medium 5.5Published Mar 10, 2026

CVE-2026-27221Acrobat Reader | Improper Certificate Validation (CWE-295)

Updated under an hour ago (Oct 27, 2026, 6:30 AM ET)

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It affects Adobe Acrobat DC and 3 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 5.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Weakness (CWE): CWE-295
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: adobe
NVD analysis: Analyzed
Record last updated: Aug 27, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Adobe Acrobat DC adobe:acrobat_dc (from the name)	through 25.001.21265; 25.001.21288 not affected	CNA record
Adobe Acrobat Reader DC adobe:acrobat_reader_dc (from the name)	through 25.001.21265; 25.001.21288 not affected	CNA record
Adobe Acrobat 2024 adobe:acrobat_2024 (from the name)	through 24.001.30307 (Win), 24.001.30308 (Mac); 24.001.30356 not affected	CNA record
adobe acrobat_dc adobe:acrobat_dc	before 25.001.21288	NVD
adobe acrobat_reader_dc adobe:acrobat_reader_dc	before 25.001.21288	NVD
adobe acrobat adobe:acrobat	from 24.001.20604 before 24.001.30356	NVD

References

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.