CVE-2026-27221 (GCVE-0-2026-27221)
Vulnerability from cvelistv5 – Published: 2026-03-10 21:41 – Updated: 2026-08-27 22:09
VLAI
EPSS
VEX
Title
Acrobat Reader | Improper Certificate Validation (CWE-295)
Summary
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.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-11 03:57 UTC
CWE
- CWE-295 - Improper Certificate Validation (CWE-295)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/acrobat… | vendor-advisory |
Impacted products
3 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Adobe | Acrobat DC |
Affected:
0 , ≤ 25.001.21265
(custom)
Unaffected: 25.001.21288 (custom) |
guessed | |
| Adobe | Acrobat Reader DC |
Affected:
0 , ≤ 25.001.21265
(custom)
Unaffected: 25.001.21288 (custom) |
guessed | |
| Adobe | Acrobat 2024 |
Affected:
0 , ≤ 24.001.30307 (Win), 24.001.30308 (Mac)
(custom)
Unaffected: 24.001.30356 (custom) |
guessed |
Date Public
2026-03-10 17:00
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Sightings
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|---|
Nomenclature
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
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They have not been verified by an analyst and are provided for guidance only.
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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