P3Verified

CVE-2021-27212: openldap through 2.4.57 (inclusive), 2.5.0 · update alpha, 2.5.1 · update alpha; +5 more affected products

CVE-2021-27212. CVSS 3.1 base score 7.5 (HIGH, NVD). EPSS 0.63321 (percentile 0.99195), scored 13-Oct-2026.

Affected technology

openldap · through 2.4.57 (inclusive)
openldap

openldap · 2.5.0 · update alpha
openldap

openldap · 2.5.1 · update alpha
openldap

debian linux · 9.0
debian

debian linux · 10.0
debian

n/a · n/a
Vendor not specified by the source

SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · V3.1.0 to before V3.1.5
Siemens

SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · V3.1.0 to before V3.1.5
Siemens

SIPLUS S7-1500 CPU 1518-4 PN/DP MFP · V3.1.0 to before V3.1.5
Siemens

Description’s affected range: through 2.4.57 and 2.5.x through 2.5.1alpha

Component: Not specified by the source
Function: via

Attack conditions (NVD, CVSS 3.1): Network (remote) · No privileges required · No user interaction required

What an attacker can do

The source reports that an attacker could disrupt service. NVD’s CVSS 3.1 assessment (base score 7.5/10) rates confidentiality and integrity impact as none; availability impact as high.

Published 14-Oct-2026 15:58 UTC

CWE: CWE-617
CCR priority: 45.8 /100 (P3)
CVSS 3.1: 7.5 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · NVD
EPSS: 0.63321 · percentile 0.99195 · 2026-10-13
KEV: no

Provenance

GitHub Advisory Database · Source record · observed 2026-10-14 16:01:16.619248+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-14 15:56:36.793806+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2021-27212.html