CVE-2022-34903Public exploitNetwork attack vector

Signature forgery via unescaped status-line notation data

Published Jul 1, 2022 · Updated Aug 3, 2024

Status-line injection in GnuPG 2.3.6 and earlier allows remote attackers to forge signature validity and signer fingerprints. The write_status_text_and_buffer() routine mishandles consecutive escapable bytes at a wrap boundary, underflows a length, and emits attacker-controlled notation data unescaped into the status stream. Exploitation requires secret key material already present in the victim's keyring and a caller such as GPGME that accepts injected status lines, enabling signature or access-control spoofing.

CVSS severity6.5
Medium
EPSS probability2.76%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Status-line injection in GnuPG 2.3.6 and earlier allows remote attackers to forge signature validity and signer fingerprints. The write_status_text_and_buffer() routine mishandles consecutive escapable bytes at a wrap boundary, underflows a length, and emits attacker-controlled notation data unescaped into the status stream. Exploitation requires secret key material already present in the victim's keyring and a caller such as GPGME that accepts injected status lines, enabling signature or access-control spoofing.

The record

CVE
CVE-2022-34903
Published
Jul 1, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-74, T1556
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 1, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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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

5.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:N
6.5NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N

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

Weakness, pattern, technique

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
T1556Modify Authentication Process

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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