CVE-2016-7167

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-14. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 12%CVSS: 9.8Exploit: NoneExposed: 0

A fix is available — apply it.

Multiple integer overflows in the (1) curl_escape, (2) curl_easy_escape, (3) curl_unescape, and (4) curl_easy_unescape functions in libcurl before 7.50.3 allow attackers to have unspecified impact via a string of length 0xffffffff, which triggers a heap-based buffer overflow.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
95.6%
KEV
Not listed

Published

October 7, 2016

Last Modified

May 6, 2026

Advisory Details (8)

Auto-updated May 9, 2026
Patch available. Sources: redhat.
generic

[SECURITY] Fedora 25 Update: curl-7.50.3-1.fc25 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/B3IU2FRXQNU6UJIQT4NGLWWTP2GJQXO7/
generic Patch Available

[SECURITY] [DLA 1568-1] curl security update

https://lists.debian.org/debian-lts-announce/2018/11/msg00005.html
generic

curl - curl escape and unescape integer overflows - CVE-2016-7167

https://curl.haxx.se/docs/adv_20160914.html
redhat Patch Available

Affected: Red Hat Enterprise Linux 7. (BZ#1640722)

https://access.redhat.com/errata/RHSA-2018:3558
redhat Patch Available
https://access.redhat.com/errata/RHSA-2018:2486
redhat Patch Available

Affected: Red Hat Enterprise Linux 7.

https://access.redhat.com/errata/RHSA-2017:2016
generic

The Slackware Linux Project: Slackware Security Advisories

http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.538632
generic
http://www.securityfocus.com/bid/92975

Vendor Advisories for CVE-2016-7167(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibcurl3-nss (7.22.0-3ubuntu4.17) @ precise2026-05-20ubuntu
redhathttpd24-nghttp2-0:1.7.1-7.el72018-11-13redhat
redhatjbcs-httpd24-curl2018-08-16redhat
redhatcurl-0:7.29.0-42.el72017-08-01redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Additional Vendor Advisories

(3)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 9× in last 7d / 34× 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. 2026-07-07 13:42 UTCEPSS rescore
  2. 2026-07-06 16:24 UTCEPSS rescore
  3. 2026-07-06 16:24 UTCEPSS rescore
  4. 2026-07-06 02:20 UTCEPSS rescore
  5. 2026-07-06 02:20 UTCEPSS rescore
  6. 2026-07-05 02:27 UTCEPSS rescore
  7. 2026-07-01 15:02 UTCEPSS rescore
  8. 2026-06-30 23:19 UTCEPSS rescore
  9. 2026-06-30 23:19 UTCEPSS rescore
  10. 2026-06-28 14:04 UTCEPSS rescore
  11. 2026-06-28 04:53 UTCEPSS rescore
  12. 2026-06-27 03:05 UTCEPSS rescore
  13. 2026-06-25 13:47 UTCEPSS rescore
  14. 2026-06-24 14:02 UTCEPSS rescore
  15. 2026-06-23 21:30 UTCEPSS rescore
  16. 2026-06-22 14:23 UTCEPSS rescore
  17. 2026-06-21 14:54 UTCEPSS rescore
  18. 2026-06-21 14:54 UTCEPSS rescore
  19. 2026-06-21 01:57 UTCEPSS rescore
  20. 2026-06-21 01:57 UTCEPSS rescore
  21. 2026-06-19 15:55 UTCOSV refresh
  22. 2026-06-18 17:50 UTCEPSS rescore
  23. 2026-06-18 17:50 UTCEPSS rescore
  24. 2026-06-17 17:50 UTCEPSS rescore
  25. 2026-06-17 17:50 UTCEPSS rescore
Show 70 more
  1. 2026-06-16 17:50 UTCEPSS rescore
  2. 2026-06-15 17:45 UTCEPSS rescore
  3. 2026-06-14 23:14 UTCEPSS rescore
  4. 2026-06-14 23:14 UTCEPSS rescore
  5. 2026-06-13 22:57 UTCEPSS rescore
  6. 2026-06-13 22:57 UTCEPSS rescore
  7. 2026-06-12 23:09 UTCEPSS rescore
  8. 2026-06-11 13:57 UTCEPSS rescore
  9. 2026-06-08 14:14 UTCEPSS rescore
  10. 2026-06-07 15:22 UTCEPSS rescore
  11. 2026-06-07 15:22 UTCEPSS rescore
  12. 2026-06-06 13:45 UTCEPSS rescore
  13. 2026-06-06 13:45 UTCEPSS rescore
  14. 2026-06-05 22:44 UTCEPSS rescore
  15. 2026-06-05 06:08 UTCEPSS rescore
  16. 2026-06-05 06:08 UTCEPSS rescore
  17. 2026-06-04 13:10 UTCEPSS rescore
  18. 2026-06-04 13:10 UTCEPSS rescore
  19. 2026-06-02 20:10 UTCEPSS rescore
  20. 2026-06-01 13:49 UTCEPSS rescore
  21. 2026-06-01 13:49 UTCEPSS rescore
  22. 2026-05-31 22:28 UTCEPSS rescore
  23. 2026-05-31 22:28 UTCEPSS rescore
  24. 2026-05-31 00:14 UTCEPSS rescore
  25. 2026-05-30 22:23 UTCOSV refresh
  26. 2026-05-29 13:41 UTCEPSS rescore
  27. 2026-05-28 13:42 UTCEPSS rescore
  28. 2026-05-28 13:42 UTCEPSS rescore
  29. 2026-05-27 13:38 UTCEPSS rescore
  30. 2026-05-27 13:38 UTCEPSS rescore
  31. 2026-05-26 13:42 UTCEPSS rescore
  32. 2026-05-26 13:42 UTCEPSS rescore
  33. 2026-05-26 07:17 UTCEPSS rescore
  34. 2026-05-24 16:44 UTCEPSS rescore
  35. 2026-05-22 21:15 UTCEPSS rescore
  36. 2026-05-20 22:37 UTCEPSS rescore
  37. 2026-05-20 22:37 UTCEPSS rescore
  38. 2026-05-20 22:37 UTCEPSS rescore
  39. 2026-05-20 11:21 UTCEPSS rescore
  40. 2026-05-20 11:21 UTCEPSS rescore
  41. 2026-05-20 08:58 UTCEG score recompute
  42. 2026-05-20 08:58 UTCVendor advisory
  43. 2026-05-20 08:58 UTCGHSA enrichment
  44. 2026-05-20 04:55 UTCEG score recompute
  45. 2026-05-20 04:55 UTCVendor advisory
  46. 2026-05-20 04:55 UTCGHSA enrichment
  47. 2026-05-20 00:55 UTCEG score recompute
  48. 2026-05-20 00:55 UTCVendor advisory
  49. 2026-05-20 00:55 UTCGHSA enrichment
  50. 2026-05-19 20:57 UTCEG score recompute
  51. 2026-05-19 20:57 UTCVendor advisory
  52. 2026-05-19 20:57 UTCGHSA enrichment
  53. 2026-05-19 16:56 UTCEG score recompute
  54. 2026-05-19 16:56 UTCVendor advisory
  55. 2026-05-19 16:56 UTCGHSA enrichment
  56. 2026-05-19 12:58 UTCEG score recompute
  57. 2026-05-19 12:58 UTCVendor advisory
  58. 2026-05-19 12:58 UTCGHSA enrichment
  59. 2026-05-19 08:59 UTCEG score recompute
  60. 2026-05-19 08:59 UTCVendor advisory
  61. 2026-05-19 08:59 UTCGHSA enrichment
  62. 2026-05-19 05:01 UTCEG score recompute
  63. 2026-05-19 05:01 UTCVendor advisory
  64. 2026-05-19 05:01 UTCGHSA enrichment
  65. 2026-05-19 01:03 UTCEG score recompute
  66. 2026-05-19 01:03 UTCVendor advisory
  67. 2026-05-19 01:03 UTCGHSA enrichment
  68. 2026-05-18 21:30 UTCEPSS rescore
  69. 2026-05-18 21:30 UTCEPSS rescore
  70. 2026-05-18 21:30 UTCEPSS rescore

Related CVEs(same vendor)

Frequently asked(5)

What is CVE-2016-7167?
CVE-2016-7167 is a critical vulnerability published on October 7, 2016. Multiple integer overflows in the (1) curlescape, (2) curleasyescape, (3) curlunescape, and (4) curleasyunescape functions in libcurl before 7.50.3 allow attackers to have unspecified impact via a string of length 0xffffffff, which triggers a heap-based buffer overflow.
When was CVE-2016-7167 disclosed?
CVE-2016-7167 was first published in the National Vulnerability Database on October 7, 2016, with the most recent update on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2016-7167 actively exploited?
CVE-2016-7167 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 95.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2016-7167?
CVE-2016-7167 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2016-7167?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-7167, 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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