CVE-2026-8671: Insertion of sensitive information into log file vulnerability in syslink software AG Avantra on Linux, Window

Q: How do I fix CVE-2026-8671?

avantra: upgrade to 25.3.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-8671 being exploited?

CVE-2026-8671 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-2026-8671 affect?

CVE-2026-8671 affects avantra. Severity is high (CVSS 7.5). Insertion of sensitive information into log file vulnerability in syslink software AG Avantra on Linux, Windows allows Resource Leak Exposure. This issue affects Avantra: before 25.3.0.

Q: How urgent is CVE-2026-8671?

Priority 34/100. High severity; On your watchlist

Routine

HIGH 7.5WATCHLISTUPGRADE

CVE-2026-8671 is a high-severity flaw (CVSS 7.5) affecting avantra. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Insertion of sensitive information into log file vulnerability in syslink software AG Avantra on Linux, Windows allows Resource Leak Exposure. This issue affects Avantra: before 25.3.0.

Why this priority

High severity
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.2% (top 88%)
CISA exploited list	No
Weakness	CWE-532
Published	2026-05-22
Last modified	2026-07-23

Publisher (CNA): Switzerland Government Common Vulnerability Program · Vendor: avantra

Last updated 2026-07-23 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-22 14:16 UTCPublished CVE record published
2026-07-23 16:10 UTCUpdated Record last modified

avantra avantra UPGRADE

Affected: < 25.3.0

Fixed in: 25.3.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy avantra || rpm -q avantra || avantra --version

2. UPGRADE to 25.3.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade avantra

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade avantra

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-2026-8671?

avantra: upgrade to 25.3.0. Exact commands for each OS are on this page.

Is CVE-2026-8671 being exploited?

CVE-2026-8671 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-2026-8671 affect?

CVE-2026-8671 affects avantra. Severity is high (CVSS 7.5). Insertion of sensitive information into log file vulnerability in syslink software AG Avantra on Linux, Windows allows Resource Leak Exposure. This issue affects Avantra: before 25.3.0.

How urgent is CVE-2026-8671?

Priority 34/100. High severity; On your watchlist

Software pages

Windows vulnerabilities

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References

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