CVE-2026-27221— Acrobat Reader | Improper Certificate Validation (CWE-295)
Quick assessment
Affected
Adobe Acrobat DC
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Adobe Acrobat Reader是美国奥多比（Adobe）公司的一款PDF查看器。该软件用于打印，签名和注释 PDF。 Adobe Acrobat Reader 24.001.30307版本、24.001.30308版本、25.001.21265及之前版本存在信任管理问题漏洞，该漏洞源于证书验证不当，可能导致安全功能绕过。
Possible ATT&CK Techniques 2 AI
T1190 · Exploit Public-Facing Application T1621 · Multi-Factor Authentication Request GenerationAffected Version Matrix 6
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Adobe | Acrobat 2024 | ≤ 24.001.30307 (Win), 24.001.30308 (Mac) |
affected |
24.001.30356 |
unaffected | ||
| Adobe | Acrobat DC | ≤ 25.001.21265 |
affected |
25.001.21288 |
unaffected | ||
| Adobe | Acrobat Reader DC | ≤ 25.001.21265 |
affected |
25.001.21288 |
unaffected |
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I. Basic Information for CVE-2026-27221
Vulnerability Information
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Vulnerability Title
Acrobat Reader | Improper Certificate Validation (CWE-295)
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
证书验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Adobe Acrobat Reader 信任管理问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Adobe Acrobat Reader是美国奥多比（Adobe）公司的一款PDF查看器。该软件用于打印，签名和注释 PDF。 Adobe Acrobat Reader 24.001.30307版本、24.001.30308版本、25.001.21265及之前版本存在信任管理问题漏洞，该漏洞源于证书验证不当，可能导致安全功能绕过。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Adobe | Acrobat DC | 0 ~ 25.001.21265 | - |
|
| Adobe | Acrobat Reader DC | 0 ~ 25.001.21265 | - |
|
| Adobe | Acrobat 2024 | 0 ~ 24.001.30307 (Win), 24.001.30308 (Mac) | - |
|
II. Public POCs for CVE-2026-27221
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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No public POC found.
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Vendor Advisories for CVE-2026-27221 (1)
-
https://helpx.adobe.com/security/products/acrobat/apsb26-26.html vendor-advisory
Same Patch Batch · Adobe · 2026-03-10 · 28 CVEs total
| CVE-2026-21333 | 8.6 HIGH | Illustrator | Untrusted Search Path (CWE-426) |
| CVE-2026-27271 | 7.8 HIGH | Illustrator | Heap-based Buffer Overflow (CWE-122) |
| CVE-2026-27280 | 7.8 HIGH | DNG SDK | Out-of-bounds Write (CWE-787) |
| CVE-2026-27269 | 7.8 HIGH | Premiere Pro | Out-of-bounds Read (CWE-125) |
| CVE-2026-27279 | 7.8 HIGH | Substance3D - Stager | Out-of-bounds Write (CWE-787) |
| CVE-2026-27276 | 7.8 HIGH | Substance3D - Stager | Use After Free (CWE-416) |
| CVE-2026-27275 | 7.8 HIGH | Substance3D - Stager | Out-of-bounds Write (CWE-787) |
| CVE-2026-27273 | 7.8 HIGH | Substance3D - Stager | Out-of-bounds Write (CWE-787) |
| CVE-2026-27277 | 7.8 HIGH | Substance3D - Stager | Use After Free (CWE-416) |
| CVE-2026-27274 | 7.8 HIGH | Substance3D - Stager | Out-of-bounds Write (CWE-787) |
| CVE-2026-27272 | 7.8 HIGH | Illustrator | Out-of-bounds Write (CWE-787) |
| CVE-2026-21362 | 7.8 HIGH | Illustrator | Out-of-bounds Write (CWE-787) |
| CVE-2026-27267 | 7.8 HIGH | Illustrator | Stack-based Buffer Overflow (CWE-121) |
| CVE-2026-27278 | 7.8 HIGH | Acrobat Reader | Use After Free (CWE-416) |
| CVE-2026-27220 | 7.8 HIGH | Acrobat Reader | Use After Free (CWE-416) |
| CVE-2026-27218 | 5.5 MEDIUM | Substance3D - Painter | NULL Pointer Dereference (CWE-476) |
| CVE-2026-27270 | 5.5 MEDIUM | Illustrator | Out-of-bounds Read (CWE-125) |
| CVE-2026-27281 | 5.5 MEDIUM | DNG SDK | Integer Overflow or Wraparound (CWE-190) |
| CVE-2026-27268 | 5.5 MEDIUM | Illustrator | Out-of-bounds Read (CWE-125) |
| CVE-2026-27219 | 5.5 MEDIUM | Substance3D - Painter | Out-of-bounds Read (CWE-125) |
Showing top 20 of 28 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Acrobat DC
-
CVE-2026-48373
Acrobat Reader | Heap-based Buffer Overflow (CWE-122) -
CVE-2026-47965
Acrobat Reader | Out-of-bounds Write (CWE-787) -
CVE-2026-47937
Acrobat Reader | Uncontrolled Search Path Element (CWE-427) -
CVE-2026-47916
Acrobat Reader | Use After Free (CWE-416) -
CVE-2026-47918
Acrobat Reader | Use After Free (CWE-416)
Same vendor: Adobe
-
CVE-2026-84395
Premiere Pro | Server-Side Request Forgery (SSRF) (CWE-918) -
CVE-2026-83963
Substance3D - Modeler | Out-of-bounds Write (CWE-787) -
CVE-2026-81998
Substance3D - Modeler | Out-of-bounds Write (CWE-787) -
CVE-2026-83962
Substance3D - Modeler | Stack-based Buffer Overflow (CWE-121 -
CVE-2026-79906
Substance3D - Modeler | Out-of-bounds Write (CWE-787)
Same weakness: CWE-295
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V. Comments for CVE-2026-27221
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