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HIGH

CVE-2026-69184

CVSS v3

7.5

HIGH

EPSS Score

0.7 %

exploit probability, as of 2026-09-29

CISA KEV

No

known exploited

Exploitation

—

SSVC status

Description

c-ares is an asynchronous resolver library. Prior to 1.34.7, ares_dns_name_parse() enforces backward DNS compression pointers but does not bound the total pointer hops or assembled name length. A malicious DNS server can send a response containing a long descending pointer chain and many resource records whose NAME or RDATA fields refer to the chain, causing repeated decompression work that grows quadratically with message size. A single crafted response can stall the single-threaded c-ares even

Technical details

Published
2026-09-18
Last Modified
2026-09-18

Frequently asked questions

What is CVE-2026-69184?

c-ares is an asynchronous resolver library. Prior to 1.34.7, ares_dns_name_parse() enforces backward DNS compression pointers but does not bound the total pointer hops or assembled name length. A malicious DNS server can send a response containing a long descending pointer chain and many resource records whose NAME or RDATA fields refer to the chain, causing repeated decompression work that grows quadratically with message size. A single crafted response can stall the single-threaded c-ares even

Is CVE-2026-69184 actively exploited?

Active exploitation of CVE-2026-69184 has not been confirmed. Its EPSS score was 0.7% on 2026-09-29, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-69184?

CVE-2026-69184 has a CVSS v3 base score of 7.5 (HIGH severity).

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