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CVE-2019-16224

29
FAUCET Score

CVE-2019-16224 is a critical vulnerability affecting py-lmdb 0.97, where an invalid write operation can occur in the mdb_node_add function due to improper memcpy destination setup under specific md_flags values. This flaw is triggered when processing a malicious data.mdb file provided by an attacker. With a CVSS score of 9.8 (Critical), this vulnerability is remotely exploitable with low attack complexity and can lead to complete compromise of confidentiality, integrity, and availability. Despite its severity, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.97CPE matchmatch criteria
cpe:2.3:a:py-lmdb_project:py-lmdb:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.76%
Probability of exploitation in next 30 days
EPSS Percentile
75.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0176 is in the 64th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

pipGHSA-9q62-r72g-pvv7critical

py-lmdb Invalid write operation

May 24, 2022

References

github.com / TeamSeri0us/pocs/tree/master/lmdb/lmdb%20initialization%20vuln
ExploitThird Party Advisory