CVE-2022-4981Public exploit

Local server crash via unchecked peer entry

Published Oct 21, 2025 · Updated Oct 21, 2025

Null pointer dereference in OFFIS DCMTK dcmqrscp 3.6.0 through 3.6.7 allows local users to crash the server with a malformed configuration file. DcmQueryRetrieveConfig::readPeerList passes an unchecked null HostEntries[i].SymbolicName pointer to strcmp while resolving a peer's symbolic name. Exploitation requires permission to supply a configuration file and launch or restart dcmqrscp with it; the documented consequence is process termination, not data access or modification.

CVSS severity5.5
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Null pointer dereference in OFFIS DCMTK dcmqrscp 3.6.0 through 3.6.7 allows local users to crash the server with a malformed configuration file. DcmQueryRetrieveConfig::readPeerList passes an unchecked null HostEntries[i].SymbolicName pointer to strcmp while resolving a peer's symbolic name. Exploitation requires permission to supply a configuration file and launch or restart dcmqrscp with it; the documented consequence is process termination, not data access or modification.

The record

CVE
CVE-2022-4981
Published
Oct 21, 2025
Updated
Oct 21, 2025
Vendor
OFFIS e.V.
Product
DCMTK
Classifications
CWE-476, CWE-404, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 21, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 21, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.6.0
  2. Affected versionversion=3.6.1
  3. Affected versionversion=3.6.2
  4. Affected versionversion=3.6.3
  5. Affected versionversion=3.6.4
  6. Affected versionversion=3.6.5
  7. Affected versionversion=3.6.6
  8. Affected versionversion=3.6.7

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

OFFIS e.V. · DCMTKversion=3.6.0; version=3.6.1; version=3.6.2; version=3.6.3; version=3.6.4; version=3.6.5; version=3.6.6; version=3.6.7

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
CWE-404Improper Resource Shutdown or Release
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

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Your stack

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