CVE-2026-81686: openssl_encrypt 1.4.x before 1.4.9 contains an optional D-Bus crypto service whose org.freedesktop.DBus.Proper

Routine

MEDIUM 6.2WATCHLISTUPGRADE

CVE-2026-81686 is a medium-severity flaw (CVSS 6.2) affecting openssl encrypt. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

openssl_encrypt 1.4.x before 1.4.9 contains an optional D-Bus crypto service whose org.freedesktop.DBus.Properties.Set method performs neither a polkit authorization check nor value validation. Any local user on the system bus can call Set without authorization and set MaxConcurrentOperations (to 0/negative, causing the concurrency gate to refuse all subsequent operations, or to a huge value removing the limit) or the unbounded DefaultTimeout, re

Why this priority

On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	6.2 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.1% (top 97%)
CISA exploited list	No
Weakness	CWE-20
Published	2026-08-27
Last modified	2026-09-02

Publisher (CNA): VulnCheck · Vendor: jahlives

Last updated 2026-09-02 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-27 17:20 UTCPublished CVE record published
2026-09-02 13:11 UTCUpdated Record last modified

jahlives openssl encrypt UPGRADE

Affected: < 1.4.9

Fixed in: 1.4.9

Safe to downgrade to: no unaffected older release

1. Check installed version

pip show openssl-encrypt

2. UPGRADE to 1.4.9

pip install --upgrade "openssl-encrypt>=1.4.9"

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-2026-81686?

openssl encrypt: upgrade to 1.4.9. Exact commands for each OS are on this page.

Is CVE-2026-81686 being exploited?

CVE-2026-81686 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-2026-81686 affect?

CVE-2026-81686 affects openssl encrypt. Severity is medium (CVSS 6.2). openssl_encrypt 1.4.x before 1.4.9 contains an optional D-Bus crypto service whose org.freedesktop.DBus.Properties.Set method performs neither a polkit authorization check nor value validation. Any local user on the system bus can call Set

How urgent is CVE-2026-81686?

Priority 28/100. On your watchlist

Software pages

OpenSSL vulnerabilities

Related CVEs

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CVE-2026-74880 CRITICAL 9.8 UPGRADE openssl_encrypt versions before 1.4.0 accept refresh tokens as URL query parameters in keyserver and telemetry
CVE-2026-74892 HIGH 7.5 UPGRADE openssl_encrypt versions before 1.4.0 contain a hardcoded default secret key in the standalone telemetry serve
CVE-2026-74890 MEDIUM 5.5 UPGRADE openssl_encrypt versions before 1.4.0 contain an authentication bypass vulnerability in CamelliaCipher that di
CVE-2026-74881 MEDIUM 6.5 UPGRADE openssl_encrypt versions before 1.4.0 configure CORS with allow_origins set to wildcard and allow_credentials

References

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