CVE-2026-58052: 7-Zip for Windows through 26.01 fails to preserve the Mark-of-the-Web when extracting a crafted RAR5 archive,

Q: How do I fix CVE-2026-58052?

7-zip: upgrade to 26.03. Exact commands for each OS are on this page.

Q: Is CVE-2026-58052 being exploited?

CVE-2026-58052 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-58052 affect?

CVE-2026-58052 affects 7-zip. Severity is low (CVSS 3.3). 7-Zip for Windows through 26.01 fails to preserve the Mark-of-the-Web when extracting a crafted RAR5 archive, because its guard that suppresses an archive-supplied Zone.Identifier stream matches the exact name 'Zone.Identifier' while a RAR5

Q: How urgent is CVE-2026-58052?

Priority 13/100. No elevated risk signals yet.

Routine

LOW 3.3UPGRADE

CVE-2026-58052 is a low-severity flaw (CVSS 3.3) affecting 7-zip. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

7-Zip for Windows through 26.01 fails to preserve the Mark-of-the-Web when extracting a crafted RAR5 archive, because its guard that suppresses an archive-supplied Zone.Identifier stream matches the exact name 'Zone.Identifier' while a RAR5 STM record named ':Zone.Identifier:$DATA' is not matched and NTFS canonicalizes it to the same stream, overwriting the propagated Internet-zone marker with ZoneId=0. A second STM record named '::$DATA' overwri

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	3.3 (Low)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 94%)
CISA exploited list	No
Weakness	CWE-693
Published	2026-06-28
Last modified	2026-10-07

Publisher (CNA): VulnCheck · Vendor: 7-zip

Last updated 2026-10-07 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-28 02:16 UTCPublished CVE record published
2026-10-07 20:49 UTCUpdated Record last modified

7-zip 7-zip UPGRADE

Affected: < 26.03

Fixed in: 26.03

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy 7-zip || rpm -q 7-zip || 7-zip --version

2. UPGRADE to 26.03 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade 7-zip

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade 7-zip

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-58052?

7-zip: upgrade to 26.03. Exact commands for each OS are on this page.

Is CVE-2026-58052 being exploited?

CVE-2026-58052 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-58052 affect?

CVE-2026-58052 affects 7-zip. Severity is low (CVSS 3.3). 7-Zip for Windows through 26.01 fails to preserve the Mark-of-the-Web when extracting a crafted RAR5 archive, because its guard that suppresses an archive-supplied Zone.Identifier stream matches the exact name 'Zone.Identifier' while a RAR5

How urgent is CVE-2026-58052?

Priority 13/100. No elevated risk signals yet.

Software pages

Windows vulnerabilities · 7-Zip vulnerabilities

Related CVEs

CVE-2026-48112 MEDIUM 6.5 UPGRADE 7-Zip is a file archiver with a high compression ratio
CVE-2026-48111 MEDIUM 4.3 UPGRADE 7-Zip is a file archiver with a high compression ratio
CVE-2026-48104 MEDIUM 4.2 UPGRADE 7-Zip is a file archiver with a high compression ratio
CVE-2026-48103 MEDIUM 4.3 UPGRADE 7-Zip is a file archiver with a high compression ratio
CVE-2026-48102 LOW 3.1 UPGRADE 7-Zip is a file archiver with a high compression ratio

References

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