CVE-2024-30203

Code execution via trusted inline MIME content

Published Mar 25, 2024 · Updated Nov 7, 2024

Code execution in Gnus in GNU Emacs before 29.3 allows attackers to run arbitrary code by opening a crafted inline MIME part. The mm-display-inline-fontify function leaves rendered MIME content trusted, so Org mode processing does not apply its untrusted-content safeguards. A user must open a malicious message, and upstream discussion states that the trust-marking change requires related Org mode protections to be effective.

CVSS severity5.5
Medium
EPSS probability0.58%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code execution in Gnus in GNU Emacs before 29.3 allows attackers to run arbitrary code by opening a crafted inline MIME part. The mm-display-inline-fontify function leaves rendered MIME content trusted, so Org mode processing does not apply its untrusted-content safeguards. A user must open a malicious message, and upstream discussion states that the trust-marking change requires related Org mode protections to be effective.

The record

CVE
CVE-2024-30203
Published
Mar 25, 2024
Updated
Nov 7, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1204.002
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Mar 25, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 7, 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 vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:R/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.

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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)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1204.002Malicious File

Public exploit references

No public exploit references are available in this record.

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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