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CVE-2026-90698— memcached mcmc Tokenizer proto_text.c try_read_command_asciiauth out-of-bounds

Quick assessment

Affected
n/a memcached
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 memcached 1.6.41/1.6.42/1.6.43 版本中发现了一个安全漏洞。该漏洞位于组件 mcmc 的 proto_text.c 文件中的 try_read_command_asciiauth 函数。通过操纵该函数可触发越界读取（out-of-bounds read）。此漏洞可被远程利用，且相关利用代码已公开，可能被用于发动攻击。升级至 1.6.44 版本可修复该问题。该补丁对应的提交标识为 af05c9302bba508b736c3da1d5670f63fe8b7db4。建议及时升级受影响的组件

CVSS 5.3 · Medium
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I. Basic Information for CVE-2026-90698

Vulnerability Information
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Vulnerability Title
memcached mcmc Tokenizer proto_text.c try_read_command_asciiauth out-of-bounds
Source: CVE Program / CVE List V5
Vulnerability Description
A security flaw has been discovered in memcached 1.6.41/1.6.42/1.6.43. This vulnerability affects the function try_read_command_asciiauth of the file proto_text.c of the component mcmc Tokenizer. The manipulation results in out-of-bounds read. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks. Upgrading to version 1.6.44 is able to resolve this issue. The patch is identified as af05c9302bba508b736c3da1d5670f63fe8b7db4. You should upgrade the affected component.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
- memcached 1.6.41 cpe:2.3:a:memcached:memcached:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-90698

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III. Intelligence Information for CVE-2026-90698

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Patches & Fixes for CVE-2026-90698 (1)

Security Blog Posts for CVE-2026-90698 (1)

Vendor Pages for CVE-2026-90698 (2)

Same Patch Batch · n/a · 2026-09-14 · 12 CVEs total

CVE-2026-90707 8.3 HIGH Open5GS Old AMF Discovery Fallback nnrf-handler.c amf_nnrf_try_old_amf_discovery_fallback
CVE-2026-90687 6.3 MEDIUM GPAC MP4Box base_scenegraph.c gf_node_changed_internal use after free
CVE-2026-90686 5.3 MEDIUM GPAC MP4Box loader_bt.c gf_bt_report memory corruption
CVE-2026-90683 3.3 LOW GPAC MP4Box base_scenegraph.c gf_node_unregister assertion
CVE-2026-90613 3.3 LOW GPAC MP4Box stbl_read.c stbl_GetSampleInfos assertion
CVE-2026-90612 3.3 LOW GPAC MP4Box scene_dump.c gf_sm_dump_command_list assertion
CVE-2026-90611 3.3 LOW GPAC MP4Box loader_xmt.c xmt_parse_element assertion
CVE-2026-90610 3.3 LOW GPAC MP4Box svg_attributes.c gf_svg_attributes_copy buffer over-read
CVE-2026-90609 3.3 LOW GPAC MP4Box vrml_tools.c null pointer dereference
CVE-2026-90685 2.8 LOW GPAC MP4Box lsr_dec.c lsr_exec_command_list assertion
CVE-2026-90684 2.8 LOW GPAC MP4Box base_scenegraph.c gf_node_get_field_count assertion

IV. Related Vulnerabilities

Same product: memcached
Same vendor: n/a
Same weakness: CWE-125

V. Comments for CVE-2026-90698

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