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CVE-2026-93311— Freedesktop Poppler SampledFunction Function.cc integer overflow

Quick assessment

Affected
Freedesktop Poppler
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.

在 Freedesktop Poppler 26.07.0 版本中检测到一处漏洞。该问题影响位于 poppler/Function.cc 文件中的 SampledFunction 组件的 SampledFunction::SampledFunction 函数。通过对 BitsPerSample 参数的操控，可导致整数溢出（Integer Overflow）。攻击者可通过远程方式实施该攻击。目前该漏洞的利用方法已公开，并可能已被实际利用。开发团队虽已提前通过缺陷报告获知此问题，但至今尚未作出响应。

CVSS 4.3 · Medium
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I. Basic Information for CVE-2026-93311

Vulnerability Information
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Vulnerability Title
Freedesktop Poppler SampledFunction Function.cc integer overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was detected in Freedesktop Poppler 26.07.0. This issue affects the function SampledFunction::SampledFunction of the file poppler/Function.cc of the component SampledFunction. The manipulation of the argument BitsPerSample results in integer overflow. The attack may be performed from remote. The exploit is now public and may be used. The project was informed of the problem early through a bug report but has not responded yet.
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
整数溢出或超界折返
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Freedesktop Poppler 26.07.0 cpe:2.3:a:freedesktop:poppler:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-93311

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III. Intelligence Information for CVE-2026-93311

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Other References for CVE-2026-93311 (4)

Same Patch Batch · Freedesktop · 2026-09-18 · 4 CVEs total

CVE-2026-93313 6.3 MEDIUM Freedesktop Poppler JBIG2Stream.cc readCodeTableSeg integer overflow
CVE-2026-93314 6.3 MEDIUM Freedesktop Poppler FoFiTrueType.cc mapCodeToGID integer overflow
CVE-2026-93312 4.3 MEDIUM Freedesktop Poppler JBIG2Stream.cc rewind null pointer dereference

IV. Related Vulnerabilities

Same product: Poppler
Same vendor: Freedesktop
Same weakness: CWE-190

V. Comments for CVE-2026-93311

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