CVE-2022-23096Public exploitNetwork attack vector

Heap disclosure and service interruption via short reply

Published Jan 28, 2022 · Updated Oct 15, 2024

Out-of-bounds read in ConnMan 1.40 and earlier allows remote attackers controlling a DNS server to disclose heap data or interrupt service. The TCP reply path in dnsproxy.c accepts a four-byte response, then forward_dns_reply() treats the two-byte request ID as a complete DNS header and reads beyond the heap buffer. Reachability requires ConnMan's internal DNS proxy and a malicious upstream DNS server, or the ability to spoof replies; integrity impact is not reported.

CVSS severity9.1
Critical
EPSS probability2.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Out-of-bounds read in ConnMan 1.40 and earlier allows remote attackers controlling a DNS server to disclose heap data or interrupt service. The TCP reply path in dnsproxy.c accepts a four-byte response, then forward_dns_reply() treats the two-byte request ID as a complete DNS header and reads beyond the heap buffer. Reachability requires ConnMan's internal DNS proxy and a malicious upstream DNS server, or the ability to spoof replies; integrity impact is not reported.

The record

CVE
CVE-2022-23096
Published
Jan 28, 2022
Updated
Oct 15, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-125, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 28, 2022CVE publishedPublication date reported by the CVE source.
  2. Oct 15, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.4NIST NVDAV:N/AC:L/Au:N/C:P/I:N/A:P
9.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
9.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1499Endpoint Denial of Service

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo