What is the CVSS score of CVE-2021-3328?

CVE-2021-3328 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 1.8%.

Is there a public PoC exploit available for CVE-2021-3328?

Yes, a public proof-of-concept exploit is available for CVE-2021-3328. Prioritise patching immediately. EPSS: 1.8%.

Abyss Web Server X1 CVE-2021-3328

HIGH

Out-of-bounds Read (CWE-125)

2021-04-08 cve@mitre.org

Buffer Overflow Information Disclosure Abyss Web Server X1

7.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.5 HIGH

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

CVE Published

Apr 08, 2021 - 18:15 nvd

HIGH 7.5

DescriptionNVD

An issue was discovered in Aprelium Abyss Web Server X1 2.12.1 and 2.14. A crafted HTTP request can lead to an out-of-bounds read that crashes the application.

AnalysisAI

An issue was discovered in Aprelium Abyss Web Server X1 2.12.1 and 2.14. Rated high severity (CVSS 7.5), 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. An issue was discovered in Aprelium Abyss Web Server X1 2.12.1 and 2.14. A crafted HTTP request can lead to an out-of-bounds read that crashes the application. Affected products include: Aprelium Abyss Web Server X1.

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.