CVE-2017-13704

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2022-05-14. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
7.5
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 65%
CISA-KEV: Not listedEPSS: 65%CVSS: 7.5Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

In dnsmasq before 2.78, if the DNS packet size does not match the expected size, the size parameter in a memset call gets a negative value. As it is an unsigned value, memset ends up writing up to 0xffffffff zero's (0xffffffffffffffff in 64 bit platforms), making dnsmasq crash.

CVSS v3
7.5
EG Score
7.5(medium)
EPSS
99.2%
KEV
Not listed

Published

October 3, 2017

Last Modified

May 13, 2026

References (24)

Data Freshness Timeline

(refreshed 4× in last 7d / 20× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-06 16:24 UTCEPSS rescore
  2. 2026-07-05 02:27 UTCEPSS rescore
  3. 2026-07-01 15:02 UTCEPSS rescore
  4. 2026-07-01 15:02 UTCEPSS rescore
  5. 2026-06-28 04:53 UTCEPSS rescore
  6. 2026-06-27 03:05 UTCEPSS rescore
  7. 2026-06-25 13:47 UTCEPSS rescore
  8. 2026-06-25 13:47 UTCEPSS rescore
  9. 2026-06-23 21:30 UTCEPSS rescore
  10. 2026-06-22 23:30 UTCOSV refresh
  11. 2026-06-21 01:57 UTCEPSS rescore
  12. 2026-06-21 01:57 UTCEPSS rescore
  13. 2026-06-18 17:50 UTCEPSS rescore
  14. 2026-06-17 17:50 UTCEPSS rescore
  15. 2026-06-16 17:50 UTCEPSS rescore
  16. 2026-06-15 17:45 UTCEPSS rescore
  17. 2026-06-13 22:57 UTCEPSS rescore
  18. 2026-06-12 23:09 UTCEPSS rescore
  19. 2026-06-11 13:57 UTCEPSS rescore
  20. 2026-06-10 22:15 UTCEPSS rescore
  21. 2026-06-07 15:22 UTCEPSS rescore
  22. 2026-06-07 15:22 UTCEPSS rescore
  23. 2026-06-06 13:45 UTCEPSS rescore
  24. 2026-06-06 13:45 UTCEPSS rescore
  25. 2026-06-05 22:44 UTCEPSS rescore
Show 20 more
  1. 2026-06-05 17:27 UTCOSV refresh
  2. 2026-06-05 06:08 UTCEPSS rescore
  3. 2026-06-05 06:08 UTCEPSS rescore
  4. 2026-06-01 13:49 UTCEPSS rescore
  5. 2026-06-01 13:49 UTCEPSS rescore
  6. 2026-05-31 00:14 UTCEPSS rescore
  7. 2026-05-29 13:41 UTCEPSS rescore
  8. 2026-05-28 13:42 UTCEPSS rescore
  9. 2026-05-28 13:42 UTCEPSS rescore
  10. 2026-05-27 13:38 UTCEPSS rescore
  11. 2026-05-27 13:38 UTCEPSS rescore
  12. 2026-05-22 21:15 UTCEPSS rescore
  13. 2026-05-22 21:15 UTCEPSS rescore
  14. 2026-05-22 21:15 UTCEPSS rescore
  15. 2026-05-22 09:21 UTCEG score recompute
  16. 2026-05-22 09:21 UTCGHSA enrichment
  17. 2026-05-20 22:37 UTCEPSS rescore
  18. 2026-05-20 22:37 UTCEPSS rescore
  19. 2026-05-18 21:30 UTCEPSS rescore
  20. 2026-05-18 21:30 UTCEPSS rescore

Frequently asked(5)

What is CVE-2017-13704?
CVE-2017-13704 is a high vulnerability published on October 3, 2017. In dnsmasq before 2.78, if the DNS packet size does not match the expected size, the size parameter in a memset call gets a negative value. As it is an unsigned value, memset ends up writing up to 0xffffffff zero's (0xffffffffffffffff in 64 bit platforms), making dnsmasq crash.
When was CVE-2017-13704 disclosed?
CVE-2017-13704 was first published in the National Vulnerability Database on October 3, 2017, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-13704 actively exploited?
CVE-2017-13704 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2017-13704?
CVE-2017-13704 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2017-13704?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-13704, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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