Is CVE-2022-38177 in the CISA KEV catalog?

No. CVE-2022-38177 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-38177?

CVE-2022-38177 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2022-38177?

CVE-2022-38177 has an EPSS score of 2.30% (81th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-38177?

Upgrade bind9 on debian 11 to 1:9.16.33-1~deb11u1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2022-38177

HIGHEPSS 81th pctl

7.5

CVSS v3

NVD

Description

By spoofing the target resolver with responses that have a malformed ECDSA signature, an attacker can trigger a small memory leak. It is possible to gradually erode available memory to the point where named crashes for lack of resources.

CWE-401Missing Release of Memory (Memory Leak)

How to fix

Remediation Available

bind9Debian

Fixed in:1:9.16.33-1~deb11u1CVE-2022-38177

Fixed in:1:9.17.20-1CVE-2022-38177

bind9Ubuntu

Fixed in:1:9.9.5.dfsg-3ubuntu0.19+esm7USN-5626-2

Fixed in:1:9.10.3.dfsg.P4-8ubuntu1.19+esm3USN-5626-2

Fixed in:1:9.11.3+dfsg-1ubuntu1.18USN-5626-1

Fixed in:1:9.16.1-0ubuntu2.11USN-5626-1

Fixed in:1:9.18.1-1ubuntu1.2USN-5626-1

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

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

2.30%probability of exploitation in 30 days

81stpercentile

Elevated risk: more likely to be exploited than 81% of all known CVEs.

References

Patch2

Third-Party Advisory4

Other references3

Related Vulnerabilities

Other CWE-401 (Missing Release of Memory (Memory Leak)) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-13934	High	7.5	64%	-	Fix
CVE-2016-6304	High	7.5	63%	-	Fix
CVE-2019-12265	Medium	5.3	55%	-	Fix
CVE-2001-0136	Medium	5.0	45%	-	-
CVE-2016-4232	High	7.5	36%	-	-
CVE-2001-0543	Medium	5.0	21%	-	-

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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 2025-05-28.