memcached 1.6.41/1.6.42/1.6.43 mcmc Tokenizer proto_text.c try_read_command_asciiauth out-of-bounds

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.8$0-$5k1.67+

Summaryinfo

A vulnerability has been found in memcached 1.6.41/1.6.42/1.6.43 and classified as problematic. This issue affects the function try_read_command_asciiauth of the file proto_text.c of the component mcmc Tokenizer. This manipulation causes out-of-bounds. This vulnerability is handled as CVE-2026-90698. The attack can be initiated remotely. Additionally, an exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in memcached 1.6.41/1.6.42/1.6.43 and classified as problematic. Affected by this vulnerability is the function try_read_command_asciiauth of the file proto_text.c of the component mcmc Tokenizer. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect availability.

It is possible to read the advisory at protectiv.ph. This vulnerability is known as CVE-2026-90698. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details and also a public exploit are known.

It is possible to download the exploit at protectiv.ph. It is declared as proof-of-concept.

Upgrading to version 1.6.44 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch af05c9302bba508b736c3da1d5670f63fe8b7db4 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: memcached 1.6.44
Patch: af05c9302bba508b736c3da1d5670f63fe8b7db4

Timelineinfo

09/13/2026 Advisory disclosed
09/13/2026 +0 days VulDB entry created
09/13/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: protectiv.ph
Status: Confirmed

CVE: CVE-2026-90698 (🔒)
GCVE (CVE): GCVE-0-2026-90698
GCVE (VulDB): GCVE-100-403231
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 09/13/2026 07:28
Changes: 09/13/2026 07:28 (59)
Complete: 🔍
Submitter: Ebfe7001d27b27064356271ddfb15d59
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #916217: Memcached 1.6.41 through 1.6.43 Out-of-Bounds Read (by Ebfe7001d27b27064356271ddfb15d59)

Duplicate

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