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NVD / CVE Program· CNA microsoft

CVE-2024-26256: Libarchive Remote Code Execution Vulnerability

HighCVSS 7.8 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Plan (action score 57/100)

  • 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: 87.8% (FIRST EPSS); higher than 99.7% of all records.
  • 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: Windows 11 Version 22H2 for ARM64-based Systems 10.0.22621.3447; Windows 11 Version 22H2 for x64-based Systems 10.0.22621.3447; Windows 11 Version 23H2 for ARM64-based Systems 10.0.22631.3447.

Add it to your regular patch cycle. Upgrade to Windows 11 Version 22H2 for ARM64-based Systems 10.0.22621.3447; Windows 11 Version 22H2 for x64-based Systems 10.0.22621.3447; Windows 11 Version 23H2 for ARM64-based Systems 10.0.22631.3447 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

Published
Apr 9, 2024
Updated
Jun 17, 2026
EPSS
87.8% · 99th percentile

Report tools

JSON

Action score

57

Plan

Add it to your regular patch cycle.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
26 / 30 · 87.8%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

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

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

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-2024-26256

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.

VendorProduct
libarchivelibarchive
fedoraprojectfedora
microsoftwindows 11 22h2
microsoftwindows 11 23h2
microsoftwindows server 2022 23h2

Versions reported by the vendor

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

  • Microsoft Windows 11 version 22H2

    • 10.0.22621.0 and later · before 10.0.22621.3447affected

  • Microsoft Windows 11 version 22H3

    • 10.0.22631.0 and later · before 10.0.22631.3447affected

  • Microsoft Windows 11 Version 23H2

    • 10.0.22631.0 and later · before 10.0.22631.3447affected

  • Microsoft Windows Server 2022, 23H2 Edition (Server Core installation)

    • 10.0.25398.0 and later · before 10.0.25398.830affected

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • microsoft windows server 2022 23h2before 10.0.25398.830

Package-level exposure

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

EcosystemPackageAffected rangeFix
Alpine:v3.16libarchivebefore 3.7.4-r03.7.4-r0
Alpine:v3.21libarchivebefore 3.7.5-r03.7.5-r0
Debian:12libarchivebefore 3.6.2-1+deb12u13.6.2-1+deb12u1
Debian:13libarchivebefore 3.7.2-2.13.7.2-2.1
openSUSE:Tumbleweedbsdtarbefore 3.7.4-1.13.7.4-1.1
SUSE:Linux Micro 6.0libarchivebefore 3.6.2-4.13.6.2-4.1
SUSE:Linux Micro 6.1libarchivebefore 3.7.4-slfo.1.1_2.13.7.4-slfo.1.1_2.1

Same product

libarchive: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-36227In libarchive before 3.6.2, the software does not check for an error after calling calloc function that can return with a NULL pointer if…
    40Plan
  • CVE-2016-1541Heap-based buffer overflow in the zip_read_mac_metadata function in archive_read_support_format_zip.c in libarchive before 3.2.0 allows…
    38Monitor
  • CVE-2024-37407Libarchive before 3.7.4 allows name out-of-bounds access when a ZIP archive has an empty-name file and mac-ext is enabled.
    36Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2021-31566Aug 23, 2022 · An improper link resolution flaw can occur while extracting an archive leading to changing modes, times, access control lists, and flags of…
    31Monitor
  • ← EarlierCVE-2023-30571May 29, 2023 · Libarchive through 3.6.2 can cause directories to have world-writable permissions.
    21Monitor
  • Later →CVE-2024-48957Oct 9, 2024 · execute_filter_audio in archive_read_support_format_rar.c in libarchive before 3.7.5 allows out-of-bounds access via a crafted archive file…
    31Monitor

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
Windows 11 Version 22H2 for ARM64-based Systems10.0.22621.3447 · KB5036893Microsoft (MSRC)
Windows 11 Version 22H2 for x64-based Systems10.0.22621.3447 · KB5036893Microsoft (MSRC)
Windows 11 Version 23H2 for ARM64-based Systems10.0.22631.3447 · KB5036893Microsoft (MSRC)
Windows 11 Version 23H2 for x64-based Systems10.0.22631.3447 · KB5036893Microsoft (MSRC)
Windows Server 2022, 23H2 Edition (Server Core installation)10.0.25398.830 · KB5036910Microsoft (MSRC)
alpine:libarchive3.7.4-r0 · Alpine:v3.16Package registry (OSV)
debian:libarchive3.6.2-1+deb12u1 · Debian:12Package registry (OSV)
opensuse:bsdtar3.7.4-1.1 · openSUSE:TumbleweedPackage registry (OSV)
suse:libarchive3.6.2-4.1 · SUSE:Linux Micro 6.0Package 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.

Variant candidates

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

  • CVE-2025-5915426 days apartLibarchive: heap buffer over read in copy_from_lzss_window() at archive_read_support_format_rar.c
    26Monitor

Not on record for this CVE: researcher credit · public bounty program.

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-122 · Heap-based Buffer Overflow

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.

ATT&CK techniques

—

References

Show all references (8 more)

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

All records