CVE-2026-27221 json
Acrobat Reader | Improper Certificate Validation (CWE-295)
published 2026-03-10 8 mo ago modified 2026-08-28 2 mo ago also EUVD-2026-10901
- cvss
- 5.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.1%
- EPSS 0.1% chance of exploitation in 30 days, percentile 1%
- public exploits
- 0
- none known
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.
Patch / fix
- Adobe Acrobat DC 25.001.21288
- Adobe Acrobat Reader DC 25.001.21288
- Adobe Acrobat 2024 24.001.30356
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 7 mo ago
Exploit prediction
0.12% chance of exploitation in the next 30 days, higher than 1% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N |
Affected products
- Adobe Acrobat DC
- Adobe Acrobat Reader DC
- Adobe Acrobat 2024
Classification
- Weakness
-
- CWE-295 Improper Certificate Validation
References
-
helpx.adobe.com
/security/products/acrobat/apsb26-26.html
vendor-advisory
Sources
- CVE List CVE-2026-27221
- NVD CVE-2026-27221
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.