Is CVE-2022-40468 in the CISA KEV catalog?

No. CVE-2022-40468 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-40468?

CVE-2022-40468 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2022-40468?

CVE-2022-40468 has an EPSS score of 1.41% (69th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-40468?

Upgrade tinyproxy on debian 11 to 1.10.0-5+deb11u1 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2022-40468

HIGH

7.5

CVSS v3

NVD

Description

Potential leak of left-over heap data if custom error page templates containing special non-standard variables are used. Tinyproxy commit 84f203f and earlier use uninitialized buffers in process_request() function.

CWE-1188

How to fix

Remediation Available

tinyproxyDebian

Fixed in:1.10.0-5+deb11u1CVE-2022-40468

Fixed in:1.11.1-2CVE-2022-40468

tinyproxyUbuntu

Fixed in:1.8.3-3ubuntu14.04.1~esm2USN-7140-2

Fixed in:1.8.3-3ubuntu16.04.1~esm2USN-7140-1

Fixed in:1.8.4-5ubuntu0.1~esm2USN-7140-1

Fixed in:1.10.0-4ubuntu0.1USN-7140-1

Fixed in:1.11.0-1ubuntu0.1~esm1USN-7140-1

tinyproxy-binUbuntu

Fixed in:1.8.4-5ubuntu0.1~esm2USN-7140-1

Fixed in:1.10.0-4ubuntu0.1USN-7140-1

Fixed in:1.11.0-1ubuntu0.1~esm1USN-7140-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

1.41%probability of exploitation in 30 days

69thpercentile

Moderate risk: more likely to be exploited than 69% of all known CVEs.

References

Exploit2

Third-Party Advisory1

github.com

Other references3

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-04.