CVE-2026-4135: During an internal security assessment, a potential vulnerability was discovered in Lenovo Software Fix, that

Q: How do I fix CVE-2026-4135?

software fix: upgrade to 7.5.5.19. Exact commands for each OS are on this page.

Q: Is CVE-2026-4135 being exploited?

CVE-2026-4135 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-2026-4135 affect?

CVE-2026-4135 affects software fix. Severity is medium (CVSS 6.6). During an internal security assessment, a potential vulnerability was discovered in Lenovo Software Fix, that during installation could allow a local authenticated user to perform an arbitrary file write with elevated privileges.

Q: How urgent is CVE-2026-4135?

Priority 23/100. No elevated risk signals yet.

Routine

MEDIUM 6.6UPGRADE

CVE-2026-4135 is a medium-severity flaw (CVSS 6.6) affecting software fix. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

During an internal security assessment, a potential vulnerability was discovered in Lenovo Software Fix, that during installation could allow a local authenticated user to perform an arbitrary file write with elevated privileges.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.6 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.1% (top 98%)
CISA exploited list	No
Weakness	CWE-59
Published	2026-04-15
Last modified	2026-10-26

Publisher (CNA): Lenovo Group Ltd. · Vendor: lenovo

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-15 13:16 UTCPublished CVE record published
2026-10-26 00:10 UTCUpdated Record last modified

lenovo software fix UPGRADE

Affected: < 7.5.5.19

Fixed in: 7.5.5.19

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy software-fix || rpm -q software-fix || software-fix --version

2. UPGRADE to 7.5.5.19 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade software-fix

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade software-fix

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-2026-4135?

software fix: upgrade to 7.5.5.19. Exact commands for each OS are on this page.

Is CVE-2026-4135 being exploited?

CVE-2026-4135 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-2026-4135 affect?

CVE-2026-4135 affects software fix. Severity is medium (CVSS 6.6). During an internal security assessment, a potential vulnerability was discovered in Lenovo Software Fix, that during installation could allow a local authenticated user to perform an arbitrary file write with elevated privileges.

How urgent is CVE-2026-4135?

Priority 23/100. No elevated risk signals yet.

Software pages

Lenovo vulnerabilities

Related CVEs

CVE-2026-4145 HIGH 7.8 UPGRADE During an internal security assessment, a potential vulnerability was discovered in Lenovo Software Fix that c

References

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