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CVE-2026-111497 Google: CVE-2026-111497 Buffer overflow vulnerability in the Brotli decoder

Information published.

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  1. Current Summary changed

    1 new sentence, beginning: “Information published.”

    CVE-2026-111497 Google: CVE-2026-111497 Buffer overflow vulnerability in the Brotli decoder

    Information published.

  2. As first published

    CVE-2026-111497 Google: CVE-2026-111497 Buffer overflow vulnerability in the Brotli decoder

    Out-of-bounds write in.NET allows an unauthorized attacker to elevate privileges over a network.

Read the current version at Microsoft →

Versions are compared on the headline and summary the publisher puts in their feed. An edit to the body of an article that leaves both untouched will not appear here.

Why am I seeing this Ranked on source trust — Microsoft

It ranks mainly on source trust: Microsoft is the most reliable outlet we track on this subject, and is the only one on the story so far.

StandardStandard, because a first-party source is on it, the subject was identified from the text, and it scores 0.51 against a bar of 0.50.

Blended score 0.514 — every figure below is computed, none of it is editorial.
FactorWeightScore ContributionWhere it came from
Corroboration 0.35 0.39 +0.135 26% 1 independent org on the story. Tier-3 aggregators never corroborate — they can show something is circulating, never that it is true.
Source trustleads 0.25 1.00 +0.250 49% Microsoft is the highest-trust source on this story and is first-party — the organisation announcing its own news. Trust is taken from the best source, not averaged.
Pickup rate 0.20 0.00 +0.000 0% One counted organisation, so there is no spread to measure — nothing has picked this up to set a rate.
Freshness 0.20 0.64 +0.128 25% Halves every 10 hours from the newest item on the story. This is the only factor that rewards a story for nothing more than being recent.

Corroboration counts distinct organisations, once each, and only from tiers 1 and 2. Freshness halves every 10 hours, so this ranking is a snapshot and will differ at the next build.

Read the full article at Microsoft →

What happened

Out-of-bounds write in.NET allows an unauthorized attacker to elevate privileges over a network.

1independent orgs
51story score
0velocity
100source trust
60passes seen
Critical CVE-2026-111497 Exploited in the wild

Listed in CISA's Known Exploited Vulnerabilities catalog — attackers are already using it.

CISA deadline
6 business days

How this story arrived

Ordered by when each source was first observed, which is what the velocity figure is computed from. Publishers backdate; observed order does not.

  1. 01 Microsoftfirst-party first seen CVE-2026-111497 Google: CVE-2026-111497 Buffer overflow vulnerability in the Brotli decoder

Overclock clusters coverage from independent sources and grades it automatically. The figures above are computed, not editorial. This page summarises and links to reporting by the outlets named — follow the links for the original work.