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01 Record

CVE-2026-27221

Acrobat Reader | Improper Certificate Validation (CWE-295)

MediumPUBLISHEDCNA: adobe
CNA base score5.5 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

02 Description

Acrobat Reader | Improper Certificate Validation (CWE-295)

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.11% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 1.2% of scored records. A rank, not a probability.
NVD base score
5.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
NVD analysis status
Analyzed. NVD last modified this record on 2026-08-28.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-03-10 21:41Z7 MO AGO
Last updated
2026-08-27 19:16Z2 MO AGO
Reserved
2026-02-18
Assigning CNA
adobe
Record state
PUBLISHED
Severity
Medium (CVSS 5.5)
CNA CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Weaknesses
  • CWE-295Improper Certificate ValidationBase
Data version
5.2
Document digest
eba27151d2ba3c7223e61d2bf21d7e0d61532a1277332b4985b9b5af6b0bd47a

05 Affected products

VendorProductVersionsPlatforms
AdobeAcrobat DC0 to 25.001.21265—
AdobeAcrobat Reader DC0 to 25.001.21265—
AdobeAcrobat 20240 to 24.001.30307 (Win), 24.001.30308 (Mac)—

06 References