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CVE-2023-52389

26
FAUCET Score

CVE-2023-52389 describes an integer overflow vulnerability in the Poco::UTF32Encoding component of the POCO C++ libraries, specifically affecting versions prior to 1.11.8p2, 1.12.5p2, and 1.13.0. This critical vulnerability (CVSS 9.8) allows for a remote, unauthenticated attack with low complexity, potentially leading to a stack buffer overflow and complete compromise of confidentiality, integrity, and availability. While the vulnerability is severe, there is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding it.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.11.8CPE matchmatch criteria
cpe:2.3:a:pocoproject:poco:*:*:*:*:*:*:*:*
>= 1.12.0, < 1.12.5CPE matchmatch criteria
cpe:2.3:a:pocoproject:poco:*:*:*:*:*:*:*:*
1.11.8CPE matchmatch criteria
cpe:2.3:a:pocoproject:poco:1.11.8:-:*:*:*:*:*:*
1.11.8CPE matchmatch criteria
cpe:2.3:a:pocoproject:poco:1.11.8:p1:*:*:*:*:*:*
1.12.5CPE matchmatch criteria
cpe:2.3:a:pocoproject:poco:1.12.5:-:*:*:*:*:*:*

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
0.85%
Probability of exploitation in next 30 days
EPSS Percentile
54.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0085 is in the 39th percentile among its peer group of 36,862 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

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

lists.debian.org / debian-lts-announce/2025/01/msg00017.html
github.com / pocoproject/poco/compare/poco-1.12.5p2-release...poco-1.13.0-release
Patch
github.com / pocoproject/poco/issues/4320
Patch
pocoproject.org / blog
Release Notes