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CVE-2022-26635

42
FAUCET Score

CVE-2022-26635 describes an improper NULL termination vulnerability in PHP-Memcached v2.2.0 and earlier, potentially leading to CRLF injection, though direct impact on PHP-Memcached is disputed. This critical vulnerability, with a CVSS score of 9.8, allows unauthenticated attackers to achieve high impact on confidentiality, integrity, and availability over the network with low attack complexity. Despite its high 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
<= 2.2.0CPE matchmatch criteria
cpe:2.3:a:php: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
21.44%
Probability of exploitation in next 30 days
EPSS Percentile
97.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.2144 is in the 94th 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 (2)

microsoftpatch availablevia msrc
Product: 18273-16823Fixed in: 1.6.22-1
microsoftpatch availablevia msrc
Product: cbl2 memcached 1.6.22-1 on CBL Mariner 2.0Fixed in: 1.6.22-1

Vendor Advisories (1)

microsoft2022-Apr/CVE-2022-26635Critical

PHP-Memcached v2.2.0 and below contains an improper NULL termination which allows attackers to execute CLRF injection. Note: Third parties have disputed this as not affecting PHP-Memcached directly.

Apr 12, 2022

References

github.com / php-memcached-dev/php-memcached/issues/519
xhzeem.me / posts/Php5-memcached-Injection-Bypass/read
ExploitThird Party Advisory