How severe is CVE-2022-26635?

CVE-2022-26635 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-26635 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 21% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-26635?

CVE-2022-26635 affects Php Memcached. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-26635?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2022-26635 published?

CVE-2022-26635 was published on 2022-04-05 and last updated on 2026-06-17.

CVE-2022-26635

CVE-2022-26635 is a critical-severity vulnerability in Php Memcached with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 21% places it in the 97th percentile, indicating an elevated likelihood of exploitation.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 21% (97th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Php Memcached
Published: 2022-04-05
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2022-26635?: 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.
How severe is CVE-2022-26635?: CVE-2022-26635 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-26635 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 21% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-26635?: CVE-2022-26635 affects Php Memcached. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-26635?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2022-26635 published?: CVE-2022-26635 was published on 2022-04-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:php:memcached:*:*:*:*:*:*:*:*