CVE-2017-4995

HIGHNVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.1 under NVD CVSS v3. EPSS exploit probability: 2.5%, top 17% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
8.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 3%CVSS: 8.1Exploit: NoneExposed: 0

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

An issue was discovered in Pivotal Spring Security 4.2.0.RELEASE through 4.2.2.RELEASE, and Spring Security 5.0.0.M1. When configured to enable default typing, Jackson contained a deserialization vulnerability that could lead to arbitrary code execution. Jackson fixed this vulnerability by blacklisting known "deserialization gadgets." Spring Security configures Jackson with global default typing enabled, which means that (through the previous exploit) arbitrary code could be executed if all of the following is true: (1) Spring Security's Jackson support is being leveraged by invoking SecurityJackson2Modules.getModules(ClassLoader) or SecurityJackson2Modules.enableDefaultTyping(ObjectMapper); (2) Jackson is used to deserialize data that is not trusted (Spring Security does not perform deserialization using Jackson, so this is an explicit choice of the user); and (3) there is an unknown (Jackson is not blacklisting it already) "deserialization gadget" that allows code execution present on the classpath. Jackson provides a blacklisting approach to protecting against this type of attack, but Spring Security should be proactive against blocking unknown "deserialization gadgets" when Spring Security enables default typing.

CVSS v3
8.1
EG Score
8.1(medium)
EPSS
83.4%
KEV
Not listed

Published

November 27, 2017

Last Modified

May 13, 2026

References (10)

Affected Packages

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFixed inDependents
org.springframework.security:spring-security-core5.0.0.M15.0.0.M2—

Data Freshness Timeline

(refreshed 13× in last 7d / 42× 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. 2026-07-22 22:09 UTCEG score recompute
  2. 2026-07-22 14:04 UTCEPSS rescore
  3. 2026-07-22 14:04 UTCEPSS rescore
  4. 2026-07-21 15:21 UTCEPSS rescore
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  17. 2026-07-13 22:26 UTCEPSS rescore
  18. 2026-07-12 05:43 UTCEPSS rescore
  19. 2026-07-11 14:41 UTCOSV refresh
  20. 2026-07-11 08:24 UTCEPSS rescore
  21. 2026-07-09 19:06 UTCEPSS rescore
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  1. 2026-07-06 02:20 UTCEPSS rescore
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  18. 2026-06-22 21:05 UTCOSV refresh
  19. 2026-06-22 14:23 UTCEPSS rescore
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  21. 2026-06-21 14:54 UTCEPSS rescore
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  23. 2026-06-21 01:57 UTCEPSS rescore
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  25. 2026-06-19 19:23 UTCEPSS rescore
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  27. 2026-06-18 17:50 UTCEPSS rescore
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  41. 2026-06-06 13:45 UTCEPSS rescore
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  43. 2026-06-05 22:44 UTCEPSS rescore
  44. 2026-06-05 12:27 UTCOSV refresh
  45. 2026-06-05 06:08 UTCEPSS rescore
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  47. 2026-06-04 13:10 UTCEPSS rescore
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  50. 2026-05-31 22:28 UTCEPSS rescore
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  63. 2026-05-22 21:15 UTCEPSS rescore
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  67. 2026-05-22 21:15 UTCEPSS rescore
  68. 2026-05-22 07:41 UTCEG score recompute
  69. 2026-05-21 22:40 UTCEPSS rescore
  70. 2026-05-20 22:37 UTCEPSS rescore
  71. 2026-05-20 22:37 UTCEPSS rescore
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  73. 2026-05-20 11:21 UTCEPSS rescore
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  75. 2026-05-18 21:30 UTCEPSS rescore

Frequently asked(5)

What is CVE-2017-4995?
CVE-2017-4995 is a high vulnerability published on November 27, 2017. An issue was discovered in Pivotal Spring Security 4.2.0.RELEASE through 4.2.2.RELEASE, and Spring Security 5.0.0.M1. When configured to enable default typing, Jackson contained a deserialization vulnerability that could lead to arbitrary code execution. Jackson fixed this vulnerability by…
When was CVE-2017-4995 disclosed?
CVE-2017-4995 was first published in the National Vulnerability Database on November 27, 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-2017-4995 actively exploited?
CVE-2017-4995 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 83.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2017-4995?
CVE-2017-4995 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2017-4995?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-4995, 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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