CVE-2026-27221: 证书验证绕过漏洞 in Adobe Acrobat Reader

此漏洞的潜在影响是严重的安全风险。攻击者可以利用此漏洞伪造数字签名的身份，从而欺骗用户相信恶意文档是可信的。这可能导致用户执行恶意操作，例如安装恶意软件、泄露敏感信息或访问未经授权的系统。攻击者可能通过电子邮件、网络下载或其他渠道分发伪造的文档，诱骗用户打开并信任它们。由于需要用户交互才能触发漏洞，因此攻击者需要诱骗用户执行特定操作，例如打开受感染的 PDF 文件。

Organizations heavily reliant on digital signatures for document verification, such as legal firms, financial institutions, and government agencies, are particularly at risk. Users who routinely handle documents from external sources or those with less stringent security awareness training are also more vulnerable.

• windows / supply-chain: Monitor for unusual processes launching Acrobat Reader with suspicious command-line arguments. Check for unexpected digital signatures on documents. Use Windows Defender to scan for potentially malicious PDF files.

Get-Process -Name AcrobatReader | Where-Object {$_.CommandLine -match "malicious_pattern"}

• linux / server: Monitor system logs for Acrobat Reader processes accessing unusual files or network locations. Audit user activity related to document opening and signing.

journalctl -u acrobatreader | grep "malicious_pattern"

• generic web: Inspect HTTP requests for PDF files being downloaded. Check for unusual headers or parameters that might indicate a malicious document.

curl -I https://example.com/document.pdf | grep "Content-Disposition"

1. 2026-03-10Disclosure

   disclosure

1. 已保留2026-02-18
2. 发布日期2026-03-10
3. 修改日期2026-03-11
4. EPSS 更新日期2026-03-23

最有效的缓解措施是立即将 Adobe Acrobat Reader 升级至 24.001.30307 或更高版本。如果无法立即升级，可以考虑以下临时缓解措施：禁用 JavaScript 在 PDF 文档中的执行，这可以减少攻击者利用此漏洞的可能性。此外，加强用户安全意识培训，教育用户识别和避免可疑的 PDF 文件。实施严格的文档验证流程，确保只有来自可信来源的文档才能被打开和信任。如果升级导致兼容性问题，请联系 Adobe 技术支持寻求帮助。