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NVD / CVE Program· CNA redhat

CVE-2026-15028: Libarchive: heap overflow oob read while parsing a tar archive contains a pax extended header

Noroxi assessment

Priority: Monitor (action score 15/100)

  • 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. A low-privileged account is enough. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • Fixed version: azl3 libarchive 3.7.7-6 on Azure Linux 3.0 3.7.7-7.

Low priority for now. Upgrade to azl3 libarchive 3.7.7-6 on Azure Linux 3.0 3.7.7-7 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 flaw was found in libarchive. This vulnerability allows a remote attacker to trigger a heap overflow by providing a specially crafted tar archive. The issue occurs during the parsing of a PAX extended header containing a malformed SUN.holesdata sparse-file attribute. Successful exploitation could lead to a denial of service, making the system unavailable, or potentially allow for arbitrary code execution, giving the attacker control over the affected system.

LowCVSS 3.9 · v3.1—No exploit Fix available
Published
Jul 10, 2026
Updated
Oct 9, 2026
EPSS
0.2% · 10th percentile

Report tools

JSON

Action score

15

Monitor

Low priority for now.

CVSS
15 / 40 · 3.9 / 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
3.9
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.

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  • 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-2026-15028

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.

  • Red Hat Red Hat Cost Management On-Premise 1

    • 1791460851 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 10

    • 0:3.7.7-11.el10_2 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 6

    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 7

    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 8

    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 9

    • all versionsaffected

  • Red Hat Red Hat Hardened Images

    • 3.8.8-2.1.hum1 and laternot affected · rpm

  • Red Hat Red Hat OpenShift Container Platform 4

    • all versionsaffected

Package-level exposure

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

EcosystemPackageAffected rangeFix
AlmaLinux:10bsdtarbefore 3.7.7-11.el10_23.7.7-11.el10_2
AlmaLinux:10libarchivebefore 3.7.7-11.el10_23.7.7-11.el10_2
AlmaLinux:10libarchive-develbefore 3.7.7-11.el10_23.7.7-11.el10_2
Debian:12libarchivebefore 3.6.2-1+deb12u53.6.2-1+deb12u5
Debian:13libarchivefrom 0—
Debian:14libarchivebefore 3.8.9-13.8.9-1
Red Hat:enterprise_linux:10.2bsdcat-debuginfobefore 0:3.7.7-11.el10_20:3.7.7-11.el10_2
Red Hat:enterprise_linux:10.2bsdcpio-debuginfobefore 0:3.7.7-11.el10_20:3.7.7-11.el10_2
Red Hat:enterprise_linux:10.2bsdtarbefore 0:3.7.7-11.el10_20:3.7.7-11.el10_2
Red Hat:enterprise_linux:10.2bsdtar-debuginfobefore 0:3.7.7-11.el10_20:3.7.7-11.el10_2
Red Hat:enterprise_linux:10.2bsdunzip-debuginfobefore 0:3.7.7-11.el10_20:3.7.7-11.el10_2
Red Hat:enterprise_linux:10.2libarchivebefore 0:3.7.7-11.el10_20:3.7.7-11.el10_2
Red Hat:enterprise_linux:10.2libarchive-debuginfobefore 0:3.7.7-11.el10_20:3.7.7-11.el10_2
Red Hat:enterprise_linux:10.2libarchive-debugsourcebefore 0:3.7.7-11.el10_20:3.7.7-11.el10_2
Red Hat:enterprise_linux:10.2libarchive-develbefore 0:3.7.7-11.el10_20:3.7.7-11.el10_2
Red Hat:hummingbird:1bsdcatbefore 0:3.8.8-2.1.hum10:3.8.8-2.1.hum1
Red Hat:hummingbird:1bsdcpiobefore 0:3.8.8-2.1.hum10:3.8.8-2.1.hum1
Red Hat:hummingbird:1bsdtarbefore 0:3.8.8-2.1.hum10:3.8.8-2.1.hum1
Red Hat:hummingbird:1bsdunzipbefore 0:3.8.8-2.1.hum10:3.8.8-2.1.hum1
Red Hat:hummingbird:1libarchivebefore 0:3.8.8-2.1.hum10:3.8.8-2.1.hum1
Red Hat:hummingbird:1libarchive-develbefore 0:3.8.8-2.1.hum10:3.8.8-2.1.hum1
Rocky Linux:10libarchivebefore 0:3.7.7-11.el10_20:3.7.7-11.el10_2

Same product

red hat: all records

Other highest-scoring records for the same primary product.

  • CVE-2025-10230Samba: command injection in wins server hook script
    52Plan
  • CVE-2026-4631Cockpit: cockpit: unauthenticated remote code execution due to ssh command-line argument injection
    44Plan
  • CVE-2026-76578Ipa: freeipa: freeipa: unauthenticated ldap client can obtain administrator credentials via the self-managed-token aci
    39Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2026-59691Jul 9, 2026 · Gstreamer1-plugins-bad-free: gstreamer: rfbsrc/librfb hextile heap out-of-bounds write with 16bpp framebuffer
    28Monitor
  • ← EarlierCVE-2026-59692Jul 9, 2026 · Gstreamer1-plugins-bad-free: gstreamer: dtls certificate subject dn stack buffer overflow in openssl_verify_callback
    30Monitor
  • Later →CVE-2026-12478Jul 14, 2026 · Libsoup: incomplete fix for cve-2026-0716: out-of-bounds read in libsoup websocket frame processing (unmasked path)
    19Monitor

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
azl3 libarchive 3.7.7-6 on Azure Linux 3.03.7.7-7 · CBL-Mariner ReleasesMicrosoft (MSRC)
almalinux:bsdtar3.7.7-11.el10_2 · AlmaLinux:10Package registry (OSV)
almalinux:libarchive3.7.7-11.el10_2 · AlmaLinux:10Package registry (OSV)
almalinux:libarchive-devel3.7.7-11.el10_2 · AlmaLinux:10Package registry (OSV)
debian:libarchive3.6.2-1+deb12u5 · Debian:12Package registry (OSV)
red hat:bsdcat0:3.8.8-2.1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:bsdcat-debuginfo0:3.7.7-11.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:bsdcpio0:3.8.8-2.1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:bsdcpio-debuginfo0:3.7.7-11.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:bsdtar0:3.7.7-11.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:bsdtar0:3.8.8-2.1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:bsdtar-debuginfo0:3.7.7-11.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:bsdunzip0:3.8.8-2.1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:bsdunzip-debuginfo0:3.7.7-11.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:libarchive0:3.8.8-2.1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:libarchive-debuginfo0:3.7.7-11.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:libarchive-debugsource0:3.7.7-11.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:libarchive-devel0:3.7.7-11.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:libarchive-devel0:3.8.8-2.1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
rocky linux:libarchive0:3.7.7-11.el10_2 · Rocky Linux:10Package 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.

  • CVE-2026-0716178 days apartLibsoup: out-of-bounds read in libsoup websocket frame processing
    19Monitor

Chain candidates

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

  • CVE-2026-144763 days apartSssd: sssd: gpo cache path traversal via unsanitized gpcfilesyspath allows kerberos authentication bypass
    32Monitor

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.
  • A low-privileged account is enough.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
low · data can be read
Integrity
none
Availability
low · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
Required
Scope
Unchanged
Confidentiality impact
Low
Integrity impact
None
Availability impact
Low

Weakness class (CWE)

CWE-805 · Buffer Access with Incorrect Length Value

CVSS vector

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

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

—

Change log

  1. Fix✗ → ✓

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References

Show all references (6 more)

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

All records