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CVE-2026-47783

Memcached vulnerability

8.1 HIGHEPSS 1.26%
  1. Published20 May 2026

Description

In memcached before 1.6.42, username data for SASL password database authentication has a timing side channel because a loop exits as soon as a valid username is found by sasl_server_userdb_checkpass.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityHigh
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Memcached< 1.6.42

Remediation

Fixed in
Memcached≥ 1.6.42

References

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Frequently asked

Is CVE-2026-47783 being actively exploited?

CVE-2026-47783 is not in the CISA KEV catalog. Its EPSS exploit probability is 1.26%.

How severe is CVE-2026-47783?

CVE-2026-47783 has a CVSS 3.1 base score of 8.1, rated high. EPSS estimates a 1.26% probability of exploitation.

Which products are affected by CVE-2026-47783?

Affected products include Memcached.

How do I fix CVE-2026-47783?

Upgrade affected software to a fixed version, for example Memcached 1.6.42 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-47783 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.