What is the CVSS score of CVE-2021-33590?

CVE-2021-33590 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 1.5%.

Is there a public PoC exploit available for CVE-2021-33590?

Yes, a public proof-of-concept exploit is available for CVE-2021-33590. Prioritise patching immediately. EPSS: 1.5%.

Gattlib CVE-2021-33590

CRITICAL

Out-of-bounds Read (CWE-125)

2021-05-27 cve@mitre.org

Buffer Overflow Information Disclosure Gattlib

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

May 27, 2021 - 11:15 nvd

CRITICAL 9.8

DescriptionNVD

GattLib 0.3-rc1 has a stack-based buffer over-read in get_device_path_from_mac in dbus/gattlib.c.

AnalysisAI

GattLib 0.3-rc1 has a stack-based buffer over-read in get_device_path_from_mac in dbus/gattlib.c. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Out-of-bounds Read (CWE-125), which allows attackers to read data from memory outside the intended buffer boundaries. GattLib 0.3-rc1 has a stack-based buffer over-read in get_device_path_from_mac in dbus/gattlib.c. Affected products include: Labapart Gattlib.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate array indices and buffer lengths. Use memory-safe languages. Enable AddressSanitizer during testing.