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CVE-2021-35472

22
FAUCET Score

CVE-2021-35472 describes a session cache corruption vulnerability in LemonLDAP::NG versions prior to 2.0.12, affecting Debian Linux distributions. This high-severity flaw, rated 8.8 CVSS, allows an authenticated attacker to achieve authorization bypass or spoofing by repeatedly attempting authentication, potentially gaining access as a different user. While the vulnerability has a high impact on confidentiality, integrity, and availability, there is currently no evidence of active exploitation, public exploit code, or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.0.11CPE matchmatch criteria
cpe:2.3:a:lemonldap-ng:lemonldap\:\:ng:*:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.68%
Probability of exploitation in next 30 days
EPSS Percentile
74.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0168 is in the 72nd percentile among its peer group of 17,844 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, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

gitlab.ow2.org / lemonldap-ng/lemonldap-ng/-/commit/8d3b763b6af2b8a9c4ad2765fbfabffec8a73af5
PatchThird Party Advisory
gitlab.ow2.org / lemonldap-ng/lemonldap-ng/-/issues/2539
ExploitPatchThird Party Advisory
gitlab.ow2.org / lemonldap-ng/lemonldap-ng/-/tags
PatchThird Party Advisory
debian.org / security/2021/dsa-4943
Third Party Advisory