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CVE-2026-63272— Heap buffer overflow in WMF text record import

一分钟漏洞结论

影响对象
The Document Foundation LibreOffice
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。

LibreOffice can import WMF graphics, which may be embedded in documents. A heap buffer overflow existed when importing a text record that carries its own character advance widths. The count of advance values and the length of the text were read separately from

CVSS 5.4 · Medium

影响版本矩阵 1

厂商产品 版本范围状态
The Document Foundation LibreOffice 26.2< < 26.2.5 affected
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一、 漏洞 CVE-2026-63272 基础信息

漏洞信息

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Vulnerability Title
Heap buffer overflow in WMF text record import
来源: CVE Program / CVE List V5
Vulnerability Description
LibreOffice can import WMF graphics, which may be embedded in documents. A heap buffer overflow existed when importing a text record that carries its own character advance widths. The count of advance values and the length of the text were read separately from the file and were not required to agree, so drawing the text walked the advance array by character position and ran past its end when the array was the shorter of the two. In fixed versions an advance array shorter than its text is ignored.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:P
来源: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
来源: CVE Program / CVE List V5

受影响产品

厂商 产品 影响版本 CPE 订阅
The Document Foundation LibreOffice 26.2 ~ < 26.2.5 -

二、漏洞 CVE-2026-63272 的公开POC

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三、漏洞 CVE-2026-63272 的情报信息

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CVE-2026-63272 其他参考 (1)

同批安全公告 · The Document Foundation · 2026-09-22 · 共 7 条

CVE-2026-63278 6.7 MEDIUM Package URLs can be used to exfiltrate arbitrary INI file values and environment variables
CVE-2026-63279 5.4 MEDIUM Out of bounds read in PICT image import
CVE-2026-63274 5.4 MEDIUM Heap buffer overflow in PDF import stream handling
CVE-2026-63273 5.4 MEDIUM Heap buffer overflow in PDF import encryption handling
CVE-2026-63276 5.4 MEDIUM Stack buffer overflow in CFF to Type 1 font conversion
CVE-2026-63275 5.4 MEDIUM Stack buffer overflow in CFF font hint handling

IV. Related Vulnerabilities

Same product: LibreOffice
Same vendor: The Document Foundation
Same weakness: CWE-787

V. Comments for CVE-2026-63272

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