Is CVE-2011-3631 being actively exploited?

CVE-2011-3631 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2011-3631?

CVE-2011-3631 has a CVSS 3.1 base score of 8.8 (HIGH).

CVE-2011-3631

HIGH · CVSS 8.8EPSS 2.7%EU EUVD

Hardlink before 0.1.2 has multiple integer overflows leading to heap-based buffer overflows because of the way string lengths concatenation is done in the calculation of the required memory space to be used. A remote attacker could provide a specially-crafted directory tree and trick the local user into consolidating it, leading to hardlink executable crash or potentially arbitrary code execution with user privileges.

Key facts

CVSS score: 8.8 (v3.1)
Severity: HIGH
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-190
EPSS score: 2.7% (86th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2011-3590)
Published: November 26, 2019
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2011-3590 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

debian / debian linux
debian / debian linux
debian / debian linux
hardlink project / hardlink
redhat / enterprise linux
redhat / enterprise linux

Certified products that may be affected

7 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.

Red Hat Enterprise Linux libgcrypt Cryptographic Module v4.0 [1] and Red Hat Enterprise Linux libgcrypt Cryptographic Module v5.0 [2] - Red Hat®, Inc. - FIPS 140 2657 - historical
Red Hat Enterprise Linux 5 OpenSSH-Server Cryptographic Module - Red Hat®, Inc. - FIPS 140 1384 - historical
Red Hat Enterprise Linux 5 OpenSSH Client Cryptographic Module - Red Hat®, Inc. - FIPS 140 1385 - historical
Red Hat Enterprise Linux 5 OpenSwan Cryptographic Module - Red Hat®, Inc. - FIPS 140 1386 - historical
Red Hat Enterprise Linux 5 Kernel Crypto API Cryptographic Module - Red Hat®, Inc. - FIPS 140 1387 - historical

See all 7 in the Security Certifications Explorer.

References

https://access.redhat.com/security/cve/cve-2011-3631(Third Party Advisory)
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=645516(Issue Tracking, Third Party Advisory)
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-3631(Issue Tracking, Third Party Advisory)
https://security-tracker.debian.org/tracker/CVE-2011-3631(Third Party Advisory)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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