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CVE-2023-46853

28
FAUCET Score

CVE-2023-46853 is a critical off-by-one error in Memcached versions prior to 1.6.22, specifically affecting its proxy mode when processing requests using '\n' instead of '\r\n'. This vulnerability carries a CVSS score of 9.8, indicating a critical severity with a network attack vector, low attack complexity, and high potential for confidentiality, integrity, and availability impacts. Despite its severity, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.6.22CPE matchmatch criteria
cpe:2.3:a:memcached:memcached:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.76%
Probability of exploitation in next 30 days
EPSS Percentile
51.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0076 is in the 35th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (8)

github_advisorypatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: azl3 memcached 1.6.21-1 on Azure Linux 3.0Fixed in: 1.6.27-1
microsoftpatch availablevia msrc
Product: azl3 memcached 1.6.27-1 on Azure Linux 3.0Fixed in: 1.6.27-1
microsoftpatch availablevia msrc
Product: cbl2 memcached 1.6.22-1 on CBL Mariner 2.0Fixed in: 1.6.22-1
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 x64Fixed in: 1.6.22-1
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 ARMFixed in: 1.6.22-1
microsoftpatch availablevia msrc
Product: Azure Linux 3.0 x64Fixed in: 1.6.27-1
microsoftpatch availablevia msrc
Product: Azure Linux 3.0 ARMFixed in: 1.6.27-1

Vendor Advisories (3)

microsoft2024-Jun/CVE-2023-46853

CVE-2023-46853

Jun 11, 2024
redhatCVE-2023-46853Important

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

Oct 27, 2023
microsoft2023-Oct/CVE-2023-46853Critical

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.

Oct 10, 2023

References

github.com / memcached/memcached/commit/6987918e9a3094ec4fc8976f01f769f624d790fa
Patch
github.com / memcached/memcached/compare/1.6.21...1.6.22
Release Notes