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CVE-2021-27647

CRITICAL
Published 2021-03-12T06:35:11.865594Z
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Expert Analysis

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CVSS Score

V3.1
9.8
/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.021
probability
of exploitation in the wild

There is a 2.1% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.830
Higher than 83.0% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Description

Out-of-bounds Read vulnerability in iscsi_snapshot_comm_core in Synology DiskStation Manager (DSM) before 6.2.3-25426-3 allows remote attackers to execute arbitrary code via crafted web requests.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Synology

Synology DiskStation Manager (DSM)

Affected Versions:

unspecified

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed CRITICAL

GHSA-vwc7-rhxw-hppq

Advisory Details

Out-of-bounds Read vulnerability in iscsi_snapshot_comm_core in Synology DiskStation Manager (DSM) before 6.2.3-25426-3 allows remote attackers to execute arbitrary code via crafted web requests.

CVSS Scoring

CVSS Score

9.0

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2021-27647
WEB https://www.synology.com/security/advisory/Synology_SA_20_26
WEB https://www.zerodayinitiative.com/advisories/ZDI-21-339

Advisory provided by GitHub Security Advisory Database. Published: May 24, 2022, Modified: January 14, 2025

References

https://www.synology.com/security/advisory/Synology_SA_20_26
https://www.zerodayinitiative.com/advisories/ZDI-21-339/
Published: 2021-03-12T06:35:11.865594Z
Last Modified: 2024-09-16T20:13:32.164Z
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