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CVE-2022-28331

30
FAUCET Score

CVE-2022-28331 is a critical vulnerability affecting Apache Portable Runtime (APR) 1.7.0 and earlier on Windows, stemming from an integer overflow in apr_socket_sendv() that can lead to a stack-based buffer overflow. This flaw carries a CVSS score of 9.8, indicating a critical severity with a network-based attack vector, low complexity, and potential for complete compromise of confidentiality, integrity, and availability. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion with 11 mentions and media coverage in one article, suggesting awareness among security researchers.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.7.0CPE matchmatch criteria
cpe:2.3:a:apache:portable_runtime:*:*:*:*:*:*:*:*

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
1.57%
Probability of exploitation in next 30 days
EPSS Percentile
72.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0158 is in the 60th percentile among its peer group of 36,897 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

Patch Available

Vendor Patches (4)

microsoftpatch availablevia msrc
Product: CBL Mariner 1.0 x64Fixed in: 1.6.5-6
microsoftpatch availablevia msrc
Product: CBL Mariner 1.0 ARMFixed in: 1.6.5-6
redhatpatch availablevia redhat_api
Product: JWS 5.7.4 releaseFixed in: apr
View patch
redhatpatch availablevia redhat_api
Product: Text-Only JBCSFixed in: jbcs-httpd24-apr
View patch

Vendor Advisories (3)

microsoft2023-Jul/CVE-2022-28331

CVE-2022-28331

Jul 11, 2023
redhatCVE-2022-28331Moderate

apr: Windows out-of-bounds write in apr_socket_sendv function

Jan 31, 2023
microsoft2023-Jan/CVE-2022-28331

Apache Portable Runtime (APR): Windows out-of-bounds write in apr_socket_sendv function

Jan 10, 2023

References

lists.apache.org / thread/5pfdfn7h0vsdo5xzjn97vghp0x42jj2r
Mailing ListVendor Advisory