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CVE-2026-62641

Quick assessment

Affected
Roundcube Webmail
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.

Roundcube webmail是Roundcube团队开源的一款Web邮件客户端软件。 Roundcube webmail 1.6.17之前版本和1.7.2之前的1.7.x版本存在资源管理错误漏洞，该漏洞源于TNEF解码器在处理特制压缩RTF大小时容易受到拒绝服务攻击。

CVSS 4.3 · Medium EPSS 0.47% · P38

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 2

VendorProduct Version RangeStatus
Roundcube Webmail 1.6.0< 1.6.17 affected
1.7.0< 1.7.2 affected
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I. Basic Information for CVE-2026-62641

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, the TNEF decoder was subject to denial of service via a crafted compressed-RTF size.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5
Vulnerability Title
Roundcube webmail 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Roundcube webmail是Roundcube团队开源的一款Web邮件客户端软件。 Roundcube webmail 1.6.17之前版本和1.7.2之前的1.7.x版本存在资源管理错误漏洞，该漏洞源于TNEF解码器在处理特制压缩RTF大小时容易受到拒绝服务攻击。
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
Roundcube Webmail 1.6.0 ~ 1.6.17 -

II. Public POCs for CVE-2026-62641

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III. Intelligence Information for CVE-2026-62641

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Patches & Fixes for CVE-2026-62641 (2)

Vendor Advisories for CVE-2026-62641 (1)

Vendor Pages for CVE-2026-62641 (2)

Same Patch Batch · Roundcube · 2026-07-14 · 6 CVEs total

CVE-2026-62643 7.2 HIGH Roundcube webmail 服务端请求伪造漏洞
CVE-2026-54433 7.2 HIGH Roundcube webmail 跨站脚本漏洞
CVE-2026-62644 6.4 MEDIUM Roundcube webmail 授权问题漏洞
CVE-2026-54432 4.7 MEDIUM Roundcube webmail 跨站脚本漏洞
CVE-2026-62642 4.3 MEDIUM Roundcube webmail 资源管理错误漏洞

IV. Related Vulnerabilities

Same product: Webmail
Same vendor: Roundcube
Same weakness: CWE-770

V. Comments for CVE-2026-62641

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