Debian dpkg up to 1.23.5 dpkg-deb denial of service

CVSS Meta Temp Score
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CTI Interest Score
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5.8$0-$5k0.00

Summaryinfo

A vulnerability has been found in Debian dpkg up to 1.23.5 and classified as problematic. This issue affects some unknown processing of the component dpkg-deb. This manipulation causes denial of service. The identification of this vulnerability is CVE-2026-2219. It is possible to initiate the attack remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Debian dpkg up to 1.23.5. It has been declared as problematic. Affected by this vulnerability is an unknown part of the component dpkg-deb. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. The summary by CVE is:

It was discovered that dpkg-deb (a component of dpkg, the Debian package management system) does not properly validate the end of the data stream when uncompressing a zstd-compressed .deb archive, which may result in denial of service (infinite loop spinning the CPU).

It is possible to read the advisory at git.dpkg.org. This vulnerability is known as CVE-2026-2219 since 02/08/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/03/2026). The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 301114 (Linux Distros Unpatched Vulnerability : CVE-2026-2219), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.23.6 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.dpkg.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (301114) and EUVD (EUVD-2026-10138). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

ADP CISA Base Score: 7.5
ADP CISA Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 301114
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-2219

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: dpkg 1.23.6
Patch: git.dpkg.org

Timelineinfo

02/08/2026 CVE reserved
03/07/2026 +27 days Advisory disclosed
03/07/2026 +0 days VulDB entry created
06/03/2026 +88 days VulDB entry last update

Sourcesinfo

Vendor: debian.org

Advisory: git.dpkg.org
Status: Confirmed

CVE: CVE-2026-2219 (🔒)
GCVE (CVE): GCVE-0-2026-2219
GCVE (VulDB): GCVE-100-349639
EUVD: 🔒

Entryinfo

Created: 03/07/2026 09:34
Updated: 06/03/2026 07:40
Changes: 03/07/2026 09:34 (56), 03/07/2026 12:59 (1), 03/07/2026 18:39 (2), 06/03/2026 07:40 (12)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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