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NVD / CVE Program· CNA redhat

CVE-2026-96442: Emacs: emacs: arbitrary code execution in flymake mode

Noroxi assessment

Priority: Monitor (action score 31/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.20% (FIRST EPSS).
  • Someone with local access to the system can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • Fixed version: GNU Emacs GNU Emacs 31.2; azl3 emacs 29.4-6 on Azure Linux 3.0 29.4-7.

Low priority for now. Upgrade to GNU Emacs GNU Emacs 31.2; azl3 emacs 29.4-6 on Azure Linux 3.0 29.4-7 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

A code execution flaw was found in Emacs, affecting versions prior to 31.2. The Flymake mode using language backends other than Lisp would execute arbitrary code from the edited file while performing syntax checking. Viewing or editing untrusted files using Emacs could lead to arbitrary code execution with the privileges of the user running Emacs.

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Sep 23, 2026
Updated
Nov 5, 2026
EPSS
0.2% · 10th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · redhat
7.8
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-96442

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • GNU Emacs GNU Emacs

    • before 31.2affected · semver

  • Red Hat Red Hat Enterprise Linux 10

    • 1:29.4-14.el10_2.3 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 6

    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 7

    • all versionsaffected

  • Red Hat Red Hat Enterprise Linux 8

    • 1:26.1-15.el8_10.4 and laternot affected · rpm
    • 1:26.1-15.el8_10.4 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 9

    • 1:27.2-18.el9_8.3 and laternot affected · rpm

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:10emacsbefore 1:29.4-14.el10_2.31:29.4-14.el10_2.3
AlmaLinux:10emacs-commonbefore 1:29.4-14.el10_2.31:29.4-14.el10_2.3
AlmaLinux:10emacs-filesystembefore 1:29.4-14.el10_2.31:29.4-14.el10_2.3
AlmaLinux:10emacs-lucidbefore 1:29.4-14.el10_2.31:29.4-14.el10_2.3
AlmaLinux:10emacs-nwbefore 1:29.4-14.el10_2.31:29.4-14.el10_2.3
AlmaLinux:8emacsbefore 1:26.1-15.el8_10.41:26.1-15.el8_10.4
AlmaLinux:8emacs-commonbefore 1:26.1-15.el8_10.41:26.1-15.el8_10.4
AlmaLinux:8emacs-filesystembefore 1:26.1-15.el8_10.41:26.1-15.el8_10.4
AlmaLinux:8emacs-lucidbefore 1:26.1-15.el8_10.41:26.1-15.el8_10.4
AlmaLinux:8emacs-noxbefore 1:26.1-15.el8_10.41:26.1-15.el8_10.4
AlmaLinux:8emacs-terminalbefore 1:26.1-15.el8_10.41:26.1-15.el8_10.4
AlmaLinux:9emacsbefore 1:27.2-18.el9_8.31:27.2-18.el9_8.3
AlmaLinux:9emacs-commonbefore 1:27.2-18.el9_8.31:27.2-18.el9_8.3
AlmaLinux:9emacs-filesystembefore 1:27.2-18.el9_8.31:27.2-18.el9_8.3
AlmaLinux:9emacs-lucidbefore 1:27.2-18.el9_8.31:27.2-18.el9_8.3
AlmaLinux:9emacs-noxbefore 1:27.2-18.el9_8.31:27.2-18.el9_8.3
Debian:12emacsfrom 0—
openSUSE:Leap 16.0emacsbefore 30.2-160000.4.130.2-160000.4.1
openSUSE:Tumbleweedemacsbefore 31.1-4.131.1-4.1
Red Hat:enterprise_linux:10.2emacsbefore 1:29.4-14.el10_2.31:29.4-14.el10_2.3
Red Hat:enterprise_linux:10.2emacs-commonbefore 1:29.4-14.el10_2.31:29.4-14.el10_2.3
Red Hat:enterprise_linux:10.2emacs-common-debuginfobefore 1:29.4-14.el10_2.31:29.4-14.el10_2.3
Red Hat:enterprise_linux:10.2emacs-debuginfobefore 1:29.4-14.el10_2.31:29.4-14.el10_2.3
Red Hat:enterprise_linux:10.2emacs-debugsourcebefore 1:29.4-14.el10_2.31:29.4-14.el10_2.3

+21

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
GNU Emacs GNU Emacs31.2Vendor (CNA)
azl3 emacs 29.4-6 on Azure Linux 3.029.4-7 · Release NotesMicrosoft (MSRC)
almalinux:emacs1:29.4-14.el10_2.3 · AlmaLinux:10Package registry (OSV)
almalinux:emacs-common1:29.4-14.el10_2.3 · AlmaLinux:10Package registry (OSV)
almalinux:emacs-filesystem1:29.4-14.el10_2.3 · AlmaLinux:10Package registry (OSV)
almalinux:emacs-lucid1:29.4-14.el10_2.3 · AlmaLinux:10Package registry (OSV)
almalinux:emacs-nox1:27.2-18.el9_8.3 · AlmaLinux:9Package registry (OSV)
almalinux:emacs-nw1:29.4-14.el10_2.3 · AlmaLinux:10Package registry (OSV)
almalinux:emacs-terminal1:26.1-15.el8_10.4 · AlmaLinux:8Package registry (OSV)
opensuse:emacs31.1-4.1 · openSUSE:TumbleweedPackage registry (OSV)
red hat:emacs1:29.4-14.el10_2.3 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:emacs-common1:29.4-14.el10_2.3 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:emacs-common-debuginfo1:29.4-14.el10_2.3 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:emacs-debuginfo1:29.4-14.el10_2.3 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:emacs-debugsource1:29.4-14.el10_2.3 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:emacs-filesystem1:29.4-14.el10_2.3 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:emacs-gtk+x11-debuginfo1:29.4-14.el10_2.3 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:emacs-lucid1:29.4-14.el10_2.3 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:emacs-lucid-debuginfo1:29.4-14.el10_2.3 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:emacs-nox1:27.2-18.el9_8.3 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:emacs-nw1:29.4-14.el10_2.3 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:emacs-nw-debuginfo1:29.4-14.el10_2.3 · Red Hat:enterprise_linux:10.2Package registry (OSV)
rocky linux:emacs1:29.4-14.el10_2.3 · Rocky Linux:10Package registry (OSV)
suse:emacs30.2-160000.4.1 · SUSE:Linux Enterprise Server 16.0Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-94 · Improper Control of Generation of Code ('Code Injection')

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records