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CVE-2001-0977

16
FAUCET Score

CVE-2001-0977 describes a denial-of-service vulnerability affecting OpenLDAP versions 1.x before 1.2.12 and 2.x before 2.0.8, as well as several Linux distributions. Remote attackers can exploit this flaw by sending a malformed Basic Encoding Rules (BER) length field, causing the slapd daemon to crash. This vulnerability has a CVSS score of 5.0 (Medium), indicating it can be exploited remotely with low attack complexity, leading to a partial availability impact. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
7.2CPE matchmatch criteria
cpe:2.3:a:mandrakesoft:mandrake_single_network_firewall:7.2:*:*:*:*:*:*:*
1.0CPE matchmatch criteria
cpe:2.3:a:openldap:openldap:1.0:*:*:*:*:*:*:*
1.0.1CPE matchmatch criteria
cpe:2.3:a:openldap:openldap:1.0.1:*:*:*:*:*:*:*
1.0.2CPE matchmatch criteria
cpe:2.3:a:openldap:openldap:1.0.2:*:*:*:*:*:*:*
1.0.3CPE matchmatch criteria
cpe:2.3:a:openldap:openldap:1.0.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
4.09%
Probability of exploitation in next 30 days
EPSS Percentile
89.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0409 is in the 86th percentile among its peer group of 23,705 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

redhatpatch availablevia redhat_api
Product: Red Hat Linux 6.2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Linux 7.0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Linux 7.1
View patch

Vendor Advisories (1)

redhatCVE-2001-0977

security flaw

Jul 16, 2001

References

distro.conectiva.com.br / atualizacoes
exchange.xforce.ibmcloud.com / vulnerabilities/6904
cert.org / advisories/CA-2001-18.html
PatchThird Party AdvisoryUS Government Resource
debian.org / security/2001/dsa-068
kb.cert.org / vuls/id/935800
PatchThird Party AdvisoryUS Government Resource
linux-mandrake.com / en/security/2001/MDKSA-2001-069.php3
PatchVendor Advisory
osvdb.org / 1905
redhat.com / support/errata/RHSA-2001-098.html
securityfocus.com / bid/3049
PatchVendor Advisory