Is CVE-2001-0977 being actively exploited?

CVE-2001-0977 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2001-0977?

CVE-2001-0977 has a CVSS 2.0 base score of 5.0 (MEDIUM).

CVE-2001-0977

MEDIUM · CVSS 5.0EPSS 4.1%EU EUVD

slapd in OpenLDAP 1.x before 1.2.12, and 2.x before 2.0.8, allows remote attackers to cause a denial of service (crash) via an invalid Basic Encoding Rules (BER) length field.

Key facts

CVSS score: 5.0 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
EPSS score: 4.1% (91th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2001-0959)
Published: July 16, 2001
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2001-0959 in the EU Vulnerability Database. Last updated in EUVD on August 8, 2024.

View on the EU Vulnerability Database

Affected products

debian / debian linux
mandrakesoft / mandrake linux
mandrakesoft / mandrake linux
mandrakesoft / mandrake linux
mandrakesoft / mandrake linux corporate server
mandrakesoft / mandrake single network firewall
openldap / openldap
openldap / openldap
openldap / openldap
openldap / openldap
openldap / openldap
openldap / openldap
openldap / openldap
openldap / openldap
openldap / openldap
openldap / openldap
openldap / openldap
openldap / openldap
openldap / openldap
openldap / openldap
openldap / openldap
openldap / openldap
openldap / openldap
openldap / openldap
openldap / openldap
openldap / openldap
openldap / openldap
openldap / openldap
openldap / openldap
openldap / openldap
openldap / openldap
openldap / openldap
openldap / openldap
openldap / openldap
openldap / openldap
openldap / openldap
redhat / linux
redhat / linux
redhat / linux

Certified products that may be affected

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

Red Hat Enterprise Linux Version 7.1 - Red Hat, Inc. - Common Criteria BSI-DSZ-CC-0949-2017 - archived
Red Hat Enterprise Linux Version 7.1 - Red Hat, Inc. - Common Criteria BSI-DSZ-CC-0999-2016 - archived
Red Hat Enterprise Linux 6.6 OpenSSL Module, Red Hat Enterprise Linux 7.1 OpenSSL Module - Red Hat®, Inc. - FIPS 140 2441 - historical
Red Hat Enterprise Linux on 32 bit x86 Architecture, Version 6.2 - Red Hat, Inc. - Common Criteria BSI-DSZ-CC-0924-2014 - archived
Red Hat Enterprise Linux 6.2 dm-crypt Cryptographic Module - Red Hat®, Inc. - FIPS 140 1933 - historical

See all 13 in the Security Certifications Explorer.

References

http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000417
http://www.cert.org/advisories/CA-2001-18.html(Patch, Third Party Advisory, US Government Resource)
http://www.debian.org/security/2001/dsa-068
http://www.kb.cert.org/vuls/id/935800(Patch, Third Party Advisory, US Government Resource)
http://www.linux-mandrake.com/en/security/2001/MDKSA-2001-069.php3(Patch, Vendor Advisory)
http://www.osvdb.org/1905
http://www.redhat.com/support/errata/RHSA-2001-098.html
http://www.securityfocus.com/bid/3049(Patch, Vendor Advisory)
https://exchange.xforce.ibmcloud.com/vulnerabilities/6904

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

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