CVE-2025-65100Network attack vector

Outdated package installation via security snapshot fallback

Published Nov 19, 2025 · Updated Nov 19, 2025

Protection mechanism failure in ilbers GmbH Isar 0.11-rc1 and 0.11 allows attackers to affect image integrity via an unintended snapshot date. The bootstrap snapshot logic reads a security-specific timestamp flag and, when only the parent date is set, ignores that date and falls back to source-date-epoch. The condition requires snapshot-based builds configured only with ISAR_APT_SNAPSHOT_DATE; affected images can omit later security updates without exposing data or interrupting the build.

CVSS severity6.9
Medium
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Protection mechanism failure in ilbers GmbH Isar 0.11-rc1 and 0.11 allows attackers to affect image integrity via an unintended snapshot date. The bootstrap snapshot logic reads a security-specific timestamp flag and, when only the parent date is set, ignores that date and falls back to source-date-epoch. The condition requires snapshot-based builds configured only with ISAR_APT_SNAPSHOT_DATE; affected images can omit later security updates without exposing data or interrupting the build.

The record

CVE
CVE-2025-65100
Published
Nov 19, 2025
Updated
Nov 19, 2025
Vendor
ilbers GmbH
Product
Isar
Classifications
CWE-693
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 19, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 19, 2025Record 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=< 738bcbb716c7eb7b34cbb2293cae4f264b3925fe

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ilbers GmbH · Isarversion=< 738bcbb716c7eb7b34cbb2293cae4f264b3925fe

Published CVSS scores

6.9GitHub CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

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

Weakness, pattern, technique

CWE-693Protection Mechanism Failure

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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