CVE-2022-3219Public exploit

Service hang via compressed signature expansion

Published Feb 23, 2023 · Updated Mar 12, 2025

Denial of service in GnuPG allows local users to hang key or signature processing with a crafted compressed OpenPGP object. GnuPG's import and detached-signature paths decompress compressed packets and then parse thousands of repeated signatures from a few kilobytes of input. A local invocation or integrating application must process the object; the affected process can consume over a minute of CPU time, without reported confidentiality or integrity impact.

CVSS severity3.3
Low
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in GnuPG allows local users to hang key or signature processing with a crafted compressed OpenPGP object. GnuPG's import and detached-signature paths decompress compressed packets and then parse thousands of repeated signatures from a few kilobytes of input. A local invocation or integrating application must process the object; the affected process can consume over a minute of CPU time, without reported confidentiality or integrity impact.

The record

CVE
CVE-2022-3219
Published
Feb 23, 2023
Updated
Mar 12, 2025
Vendor
The GnuPG Project
Product
GnuPG
Classifications
CWE-787, T1499.003
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 23, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 12, 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?

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  1. Affected versionversion=gnupg2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The GnuPG Project · GnuPGversion=gnupg2

Published CVSS scores

3.3CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
3.3NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1499.003Application Exhaustion Flood

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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