CVE-2026-111497

A buffer overflow vulnerability in the Brotli decoder (c/dec/decode.c) in Google Brotli versions 1.0.3…

CVSS 4.0 · [email protected] · Secondary 9.2 CRITICALCVSS 3.1 · [email protected] · Primary 9.8 CRITICALCheck source for fixed versionsKEV status unknown

Original advisory

Historical advisory recorded 5 Nov 2026 23:38:43 UTC. Read the latest advisory.

nvd · CVE-2026-111497

Published

A buffer overflow vulnerability in the Brotli decoder (c/dec/decode.c) in Google Brotli versions 1.0.3 through 1.2.0 on all platforms allows a remote unauthenticated attacker to corrupt adjacent decoder state memory, disclose sensitive memory contents, cause a denial of service, or potentially execute arbitrary code using a crafted Brotli-compressed stream. Users need to update any Brotli libraries or binaries between 1.0.3 through 1.2.0 to the latest available version: 1.0.10 or 1.1.1 or 1.2.1.

Read the publisher's advisory

Affected versions, risk and source history

nvd · CVE-2026-111497

Published

A buffer overflow vulnerability in the Brotli decoder (c/dec/decode.c) in Google Brotli versions 1.0.3 through 1.2.0 on all platforms allows a remote unauthenticated attacker to corrupt adjacent decoder state memory, disclose sensitive memo…

Additional publisher context

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Analyzed

Weakness classifications: CWE-252 · CWE-787

Original publisher date fields

published: 2026-10-22T14:17:37.190

lastModified: 2026-11-04T18:17:37.727

36 source CPE criteria · context only

cpe:2.3:a:google:brotli:*:*:*:*:*:-:*:*
cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*
cpe:2.3:a:python-hyper:brotlicffi:*:*:*:*:*:python:*:*
cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net:11.0.0:preview1:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net:11.0.0:preview2:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net:11.0.0:preview3:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net:11.0.0:preview4:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net:11.0.0:preview5:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net:11.0.0:preview6:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net:11.0.0:preview7:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net:11.0.0:rc1:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net:11.0.0:rc2:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:*
cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:*
cpe:2.3:a:anthropic:bun:*:*:*:*:*:*:*:*
cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*
cpe:2.3:a:tianocore:edk2:*:*:*:*:*:*:*:*
cpe:2.3:a:google:woff2:-:*:*:*:*:*:*:*
cpe:2.3:a:duckdb:duckdb:*:*:*:*:*:*:*:*
cpe:2.3:a:clickhouse:clickhouse:*:*:*:*:*:*:*:*
cpe:2.3:a:apache:arrow:*:*:*:*:*:*:*:*
cpe:2.3:a:apache:arrow:27.0.0:dev:*:*:*:*:*:*
cpe:2.3:a:mcmilk:7-zip-zstd:*:*:*:*:*:*:*:*
cpe:2.3:a:7-zip:p7zip:*:*:*:*:*:*:*:*
cpe:2.3:a:andybalholm:brotli:*:*:*:*:*:go:*:*
cpe:2.3:o:siemens:ruggedcom_ape1808_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:siemens:ruggedcom_ape1808:-:*:*:*:*:*:*:*
cpe:2.3:a:siemens:common_configurator:-:*:*:*:*:*:*:*
cpe:2.3:a:siemens:data_flow_monitoring:-:*:*:*:*:*:*:*
cpe:2.3:a:siemens:edge_opc_ua_server_configurator:-:*:*:*:*:*:*:*
cpe:2.3:a:siemens:flow_creator_configurator:-:*:*:*:*:*:*:*
cpe:2.3:a:siemens:industrial_edge_cloud_connector_configurator:-:*:*:*:*:*:*:*
cpe:2.3:a:siemens:industrial_edge_databus_configurator:-:*:*:*:*:*:*:*
cpe:2.3:a:siemens:industrial_edge_hub:-:*:*:*:*:*:*:*
cpe:2.3:a:siemens:industrial_edge_management_cloud:-:*:*:*:*:*:*:*

The original JSON retains the logical configuration operators, exclusions and version bounds.

Source published: 22 Oct 2026 14:17:37 UTC
Source modified: 4 Nov 2026 18:17:37 UTC
Saved here: 5 Nov 2026 23:38:43 UTC
Source terms: NIST NVD usage terms; underlying source attribution retained

Original source record · Cite this exact observation · Complete original publisher JSON

Source: nvd · NIST NVD usage terms; underlying source attribution retained. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS 4.0 · [email protected] · Secondary · 9.2 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS 3.1 · [email protected] · Primary · 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H