CVE-2026-58303Public exploit

Local memory corruption via stack buffer overflow

Published Jul 9, 2026 · Updated Jul 9, 2026

Stack-based buffer overflow in Escargot before b30b63fc63b403907d8137da1c65aaa4521fe74e allows local users to corrupt memory. The public issue and multi-fix pull request do not identify which function or buffer corresponds to this CVE, so the exact faulty operation is undisclosed. Exploitation requires local execution and user interaction; Samsung bounds the impact to memory modification and a process crash.

CVSS severity6.1
Medium
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in Escargot before b30b63fc63b403907d8137da1c65aaa4521fe74e allows local users to corrupt memory. The public issue and multi-fix pull request do not identify which function or buffer corresponds to this CVE, so the exact faulty operation is undisclosed. Exploitation requires local execution and user interaction; Samsung bounds the impact to memory modification and a process crash.

The record

CVE
CVE-2026-58303
Published
Jul 9, 2026
Updated
Jul 9, 2026
Vendor
Samsung Electronics Co., Ltd.
Product
Escargot
Classifications
CWE-121, CAPEC-100
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <b30b63fc63b403907d8137da1c65aaa4521fe74e

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Samsung Electronics Co., Ltd. · Escargotversion=0 <b30b63fc63b403907d8137da1c65aaa4521fe74e

Published CVSS scores

6.1Samsung PSIRTCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
CAPEC-100Overflow Buffers

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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