CVE-2026-90698

memcached mcmc Tokenizer proto_text.c try_read_command_asciiauth out-of-bounds

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.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed

Vendors

Memcached

Products

Memcached

CVE-2022-48571

memcached: Denial of Service via multi-packet uploads in UDP

memcached 1.6.7 allows a Denial of Service via multi-packet uploads in UDP.

CVSS 3.1 · 7.5 High EPSS 1.1% KEV · Not listed

Vendors

Memcached

Products

Memcached

CVE-2026-47783

memcached: memcached: Username enumeration via timing side channel

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 · 8.1 High EPSS 1.3% KEV · Not listed

Vendors

Memcached

Products

Memcached

CVE-2026-47784

memcached: Memcached: Information disclosure via timing side channel

In memcached before 1.6.42, password data for SASL password database authentication has a timing side channel because memcmp is used by sasl_server_userdb_checkpass.

CVSS 3.1 · 8.1 High EPSS < 1% KEV · Not listed

Vendors

Memcached

Products

Memcached

CVE-2016-8706

memcached: SASL authentication remote code execution

An integer overflow in process_bin_sasl_auth function in Memcached, which is responsible for authentication commands of Memcached binary protocol, can be abused to cause heap overflow and lead to remote code execution.

CVSS 3.0 · 8.1 High EPSS 45.7% KEV · Not listed

Vendors

Memcached Redhat

Products

Memcached Enterprise Linux

CVE-2016-8704

memcached: Server append/prepend remote code execution

An integer overflow in the process_bin_append_prepend function in Memcached, which is responsible for processing multiple commands of Memcached binary protocol, can be abused to cause heap overflow and lead to remote code execution.

CVSS 3.0 · 9.8 Critical EPSS 23.2% KEV · Not listed

Vendors

Memcached Redhat

Products

Memcached Enterprise Linux Mobile Application Platform

CVE-2016-8705

memcached: Server update remote code execution

Multiple integer overflows in process_bin_update function in Memcached, which is responsible for processing multiple commands of Memcached binary protocol, can be abused to cause heap overflow and lead to remote code execution.

CVSS 3.0 · 9.8 Critical EPSS 19.9% KEV · Not listed

Vendors

Memcached Redhat

Products

Memcached Enterprise Linux Mobile Application Platform

CVE-2017-9951

memcached: Heap-based buffer over-read in try_read_command function (incomplete fix for CVE-2016-8705)

The try_read_command function in memcached.c in memcached before 1.4.39 allows remote attackers to cause a denial of service (segmentation fault) via a request to add/set a key, which makes a comparison between signed and unsigned int and triggers a heap-based buffer over-read. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-8705.

CVSS 3.0 · 7.5 High EPSS 4.2% KEV · Not listed

Vendors

Memcached

Products

Memcached

CVE-2011-4971

memcached: specially crafted packet segmentation fault

Multiple integer signedness errors in the (1) process_bin_sasl_auth, (2) process_bin_complete_sasl_auth, (3) process_bin_update, and (4) process_bin_append_prepend functions in Memcached 1.4.5 and earlier allow remote attackers to cause a denial of service (crash) via a large body length value in a packet.

CVSS 2.0 · 5.0 Medium EPSS 22.3% KEV · Not listed

Vendors

Memcached

Products

Memcached

CVE-2013-0179

memcached: DoS due to buffer overrun when printing out keys to be deleted in verbose mode

The process_bin_delete function in memcached.c in memcached 1.4.4 and other versions before 1.4.17, when running in verbose mode, allows remote attackers to cause a denial of service (segmentation fault) via a request to delete a key, which does not account for the lack of a null terminator in the key and triggers a buffer over-read when printing to stderr.

CVSS 2.0 · 1.8 Low EPSS 1.5% KEV · Not listed

Vendors

Memcached

Products

Memcached

CVE-2013-7239

memcached: SASL authentication allows wrong credentials to access memcache

memcached before 1.4.17 allows remote attackers to bypass authentication by sending an invalid request with SASL credentials, then sending another request with incorrect SASL credentials.

CVSS 2.0 · 4.8 Medium EPSS 1.2% KEV · Not listed

Vendors

Memcached

Products

Memcached

CVE-2013-7290

memcached: remote DoS (segmentation fault) via a request to delete a key

The do_item_get function in items.c in memcached 1.4.4 and other versions before 1.4.17, when running in verbose mode, allows remote attackers to cause a denial of service (segmentation fault) via a request to delete a key, which does not account for the lack of a null terminator in the key and triggers a buffer over-read when printing to stderr, a different vulnerability than CVE-2013-0179.

CVSS 2.0 · 1.8 Low EPSS < 1% KEV · Not listed

Vendors

Memcached

Products

Memcached

CVE-2013-7291

memcached: remote DoS (crash) via a request that triggers "unbounded key print"

memcached before 1.4.17, when running in verbose mode, allows remote attackers to cause a denial of service (crash) via a request that triggers an "unbounded key print" during logging, related to an issue that was "quickly grepped out of the source tree," a different vulnerability than CVE-2013-0179 and CVE-2013-7290.

CVSS 2.0 · 1.8 Low EPSS < 1% KEV · Not listed

Vendors

Memcached

Products

Memcached

CVE-2021-37519

memcached: Buffer Overflow vulnerability in authfile.c

Buffer Overflow vulnerability in authfile.c memcached 1.6.9 allows attackers to cause a denial of service via crafted authenticattion file.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Memcached

Products

Memcached

CVE-2023-46853

memcached: off-by-one error when processing proxy requests in proxy mode

In Memcached before 1.6.22, an off-by-one error exists when processing proxy requests in proxy mode, if \n is used instead of \r\n.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed

Vendors

Memcached

Products

Memcached

CVE-2023-46852

memcached: buffer overflow when processing multiget requests in proxy mode

In Memcached before 1.6.22, a buffer overflow exists when processing multiget requests in proxy mode, if there are many spaces after the "get" substring.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Memcached

Products

Memcached

CVE-2020-22570

memcached: NULL pointer dereference in process_mget_command function in memcached.c

Memcached 1.6.0 before 1.6.3 allows remote attackers to cause a denial of service (daemon crash) via a crafted meta command.

CVSS 3.1 · 7.5 High EPSS 1.3% KEV · Not listed

Vendors

Memcached

Products

Memcached

CVE-2020-10931

memcached: mishandled memcpy into a stack-based buffer may lead to DoS

Memcached 1.6.x before 1.6.2 allows remote attackers to cause a denial of service (daemon crash) via a crafted binary protocol header to try_read_command_binary in memcached.c.

CVSS 3.1 · 7.5 High EPSS 28.1% KEV · Not listed

Vendors

Memcached

Products

Memcached

CVE-2019-15026

memcached: stack-based buffer over-read in conn_to_str in memcached.c

memcached 1.5.16, when UNIX sockets are used, has a stack-based buffer over-read in conn_to_str in memcached.c.

CVSS 3.0 · 7.5 High EPSS 2.6% KEV · Not listed

Vendors

Memcached

Products

Memcached

CVE-2019-11596

memcached: null-pointer dereference in "lru mode" and "lru temp_ttl" causing denial of service

In memcached before 1.5.14, a NULL pointer dereference was found in the "lru mode" and "lru temp_ttl" commands. This causes a denial of service when parsing crafted lru command messages in process_lru_command in memcached.c.

CVSS 3.0 · 7.5 High EPSS 3.0% KEV · Not listed

Vendors

Canonical Memcached Redhat

Products

Ubuntu Linux Memcached Enterprise Linux and 1 more