Threat intelligence · CVE-2017-3136
CVE-2017-3136: An error handling synthesized records could cause an assertion failure when using DNS64 with "break-dnssec yes;" A query with a specific set of characte…
Published Apr 16, 2017 · the affected product
Last checked Nov 2, 2026. A connected source was read within the last 7 days.
Check this week
CVE-2017-3136 is not in CISA KEV. FIRST estimates a 11.09% chance of exploitation in the next 30 days. Check whether you run the affected product.
Gaps on this record
- No plain product name is stored. The page cannot tell you which product to check.
- No version range is stored. A customer cannot check an installed version against this record.
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- Severity
- Unknown—
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 11.09%
- Remediation
- Not established
- Affected products
- See sources for product scope
CVE-2017-3136: An error handling synthesized records could cause an assertion failure when using DNS64 with "break-dnssec yes;" A query with a specific set of characteristics could cause a server using DNS64 to encounter an assertion failure and terminate. An attacker could deliberately construct a query, enabling denial-of-service against a server if it was configured to use the DNS64 feature and other preconditions
No affected version ranges are stored yet. Use the vendor advisory before you decide this record does not apply.
How to fix CVE-2017-3136
No stored fix
No vendor fix text is stored. Use the linked advisory before you change production.
Version check
No version range is stored, so an installed version cannot be checked on this page.
Advisory
Open the cve_org record and follow its fix.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
CVE-2017-3136 is not in CISA KEV. FIRST estimates a 11.09% chance of exploitation in the next 30 days. Check whether you run the affected product.
Which versions are affected?
Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS 11.09%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Apr 16, 2017 · AlienVault OTX
Detected
CVE-2017-3136: An error handling synthesized records could cause an assertion failure when using DNS64 with "break-dnssec yes;" A query with a specific set of characteristics could cause a server using DNS64 to encounter an assertion failure and terminate. An attacker could deliberately construct a query, enabling denial-of-service against a server if it was configured to use the DNS64 feature and
Sources
- CVE.orgVulnerability recordCVE-2017-3136
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2017-3136
30-day exploitation probability 11.09%
first.org - AlienVault OTXThreat intelligenceCVE-2017-3136otx.alienvault.com
References
Freshness
Last verified in this catalog Oct 31, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.
- CVE.orgNov 2, 2026
- FIRST EPSSOct 31, 2026
- AlienVault OTXOct 31, 2026