CVE-2017-15088

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-13. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 8%CVSS: 9.8Exploit: NoneExposed: 0

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

plugins/preauth/pkinit/pkinit_crypto_openssl.c in MIT Kerberos 5 (aka krb5) through 1.15.2 mishandles Distinguished Name (DN) fields, which allows remote attackers to execute arbitrary code or cause a denial of service (buffer overflow and application crash) in situations involving untrusted X.509 data, related to the get_matching_data and X509_NAME_oneline_ex functions. NOTE: this has security relevance only in use cases outside of the MIT Kerberos distribution, e.g., the use of get_matching_data in KDC certauth plugin code that is specific to Red Hat.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
94.3%
KEV
Not listed

Published

November 23, 2017

Last Modified

May 13, 2026

Advisory Details (5)

Auto-updated May 17, 2026
Patch available. Sources: redhat.
generic

Fix PKINIT cert matching data construction by greghudson · Pull Request #707 · krb5/krb5 · GitHub

https://github.com/krb5/krb5/pull/707
generic

Fix PKINIT cert matching data construction · krb5/krb5@fbb687d · GitHub

https://github.com/krb5/krb5/commit/fbb687db1088ddd894d975996e5f6a4252b9a2b4
redhat Patch Available

1504045 – (CVE-2017-15088) CVE-2017-15088 krb5: Buffer overflow in get_matching_data()

Affected: Red Hat Enterprise Linux 7. Red Hat Product Security has rated this issue as having Moderate security impact. A future update

https://bugzilla.redhat.com/show_bug.cgi?id=1504045
generic Patch Available

#871698 - krb5: CVE-2017-15088: Buffer overflow in get_matching_data() - Debian Bug report logs

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=871698
generic
http://www.securityfocus.com/bid/101594

Data Freshness Timeline

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

Frequently asked(5)

What is CVE-2017-15088?
CVE-2017-15088 is a critical vulnerability published on November 23, 2017. plugins/preauth/pkinit/pkinitcryptoopenssl.c in MIT Kerberos 5 (aka krb5) through 1.15.2 mishandles Distinguished Name (DN) fields, which allows remote attackers to execute arbitrary code or cause a denial of service (buffer overflow and application crash) in situations involving untrusted X.509…
When was CVE-2017-15088 disclosed?
CVE-2017-15088 was first published in the National Vulnerability Database on November 23, 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-2017-15088 actively exploited?
CVE-2017-15088 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 94.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2017-15088?
CVE-2017-15088 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2017-15088?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-15088, 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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