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CVE-2022-0635

28
FAUCET Score

CVE-2022-0635 is a high-severity denial-of-service vulnerability affecting BIND versions 9.18.0, specifically impacting products from ISC and NetApp. An unauthenticated attacker can remotely trigger a failed assertion check in the named process by sending a specific series of queries, leading to the termination of the BIND service. With a CVSS score of 7.5, this vulnerability is easily exploitable over the network with low attack complexity, resulting in a complete loss of availability. While there is no known active exploitation or public exploit code, the vulnerability has garnered some community discussion and media coverage, indicating awareness within the cybersecurity community.

Impacted Technologies

VendorProductVersion(s)CPE
9.18.0CPE matchmatch criteria
cpe:2.3:a:isc:bind:9.18.0:*:*:*:-:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.33%
Probability of exploitation in next 30 days
EPSS Percentile
68.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0133 is in the 48th percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

alistgovendor investigatingvia llm_extracted
View patch

Vendor Advisories (2)

redhatCVE-2022-0635Important

bind: Lookups involving a DNAME could trigger an assertion failure when 'synth-from-dnssec' was enabled (which is the default)

Mar 16, 2022
alistgollm-alistgo-d64e2c69ed79c788

DNAME insist with synth-from-dnssec enabled

References

kb.isc.org / v1/docs/cve-2022-0635
MitigationVendor Advisory
security.netapp.com / advisory/ntap-20220408-0001
Third Party Advisory