CVE-2016-1000027

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 33% (98th percentile of EPSS-scored CVEs). 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
Elevated
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 33%CVSS: 9.8Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

Pivotal Spring Framework through 5.3.16 suffers from a potential remote code execution (RCE) issue if used for Java deserialization of untrusted data. Depending on how the library is implemented within a product, this issue may or not occur, and authentication may be required. NOTE: the vendor's position is that untrusted data is not an intended use case. The product's behavior will not be changed because some users rely on deserialization of trusted data.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
75
EG Risk 75/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation40% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
33%
EPSS %ILE
98th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

January 2, 2020

Last Modified

October 7, 2026

Advisory Details (8)

Auto-updated Oct 7, 2026
Patch available. Sources: redhat.
redhatMentions a patch (unverified)

1357929 – (CVE-2016-1000027) CVE-2016-1000027 spring: HttpInvokerServiceExporter readRemoteInvocation method untrusted java deserialization

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-1000027
generic

[R2] Pivotal Spring Framework HttpInvokerServiceExporter readRemoteInvocation Method Untrusted Java Deserialization - Research Advisory | Tenable®

https://www.tenable.com/security/research/tra-2016-20
generic

Spring Framework 5.3.20 and 5.2.22 available now

https://spring.io/blog/2022/05/11/spring-framework-5-3-20-and-5-2-22-available-now
generic

NetApp Product Security

https://security.netapp.com/advisory/ntap-20230420-0009/
generic

CVE-2016-1000027

https://security-tracker.debian.org/tracker/CVE-2016-1000027
generic

Sonatype vulnerability CVE-2016-1000027 in Spring-web project · Issue #24434 · spring-projects/spring-framework · GitHub

https://github.com/spring-projects/spring-framework/issues/24434#issuecomment-744519525
generic

Sonatype vulnerability CVE-2016-1000027 in Spring-web project · Issue #24434 · spring-projects/spring-framework · GitHub

https://github.com/spring-projects/spring-framework/issues/24434#issuecomment-582313417
generic

Sonatype vulnerability CVE-2016-1000027 in Spring-web project · Issue #24434 · spring-projects/spring-framework · GitHub

https://github.com/spring-projects/spring-framework/issues/24434#issuecomment-579669626

Affected Packages

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
libspring-java—
  • every version up to 4.2.7-1: fixed in 4.2.7-1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
libspring-java—
  • every version up to 4.2.7-1: fixed in 4.2.7-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
libspring-java—
  • every version up to 4.2.7-1: fixed in 4.2.7-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
libspring-java—
  • every version up to 4.2.7-1: fixed in 4.2.7-1
—
Maven(1)
PackageVulnerable rangeFix by version rangeDependents
org.springframework:spring-web1.0 ... 5.3.9 (250 versions)
  • every version up to 6.0.0: fixed in 6.0.0
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 6× in last 7d / 22× 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.

Showing the most recent 100 of 122 total refreshes for this CVE.

  1. 2026-10-09 20:01 UTCEPSS rescore
  2. 2026-10-08 16:35 UTCEPSS rescore
  3. 2026-10-07 23:40 UTCEPSS rescore
  4. 2026-10-07 18:47 UTCEG score recompute
  5. 2026-10-06 15:11 UTCEPSS rescore
  6. 2026-10-03 14:21 UTCEPSS rescore
  7. 2026-09-30 14:58 UTCEPSS rescore
  8. 2026-09-30 14:58 UTCEPSS rescore
  9. 2026-09-30 09:09 UTCEG score recompute
  10. 2026-09-28 13:45 UTCEPSS rescore
  11. 2026-09-27 13:40 UTCEPSS rescore
  12. 2026-09-27 12:20 UTCOSV refresh
  13. 2026-09-26 15:53 UTCEPSS rescore
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  15. 2026-09-23 13:41 UTCEPSS rescore
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  23. 2026-09-07 21:48 UTCOSV refresh
  24. 2026-09-06 13:42 UTCEPSS rescore
  25. 2026-09-04 13:55 UTCEPSS rescore
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  1. 2026-09-02 14:07 UTCEPSS rescore
  2. 2026-09-01 13:48 UTCEPSS rescore
  3. 2026-08-26 14:41 UTCEPSS rescore
  4. 2026-08-25 13:44 UTCEPSS rescore
  5. 2026-08-23 00:13 UTCEPSS rescore
  6. 2026-08-21 23:44 UTCEPSS rescore
  7. 2026-08-21 07:14 UTCOSV refresh
  8. 2026-08-20 22:50 UTCEPSS rescore
  9. 2026-08-19 16:59 UTCEPSS rescore
  10. 2026-08-18 13:43 UTCEPSS rescore
  11. 2026-08-16 02:09 UTCEPSS rescore
  12. 2026-08-15 01:25 UTCEPSS rescore
  13. 2026-08-12 13:46 UTCEPSS rescore
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  16. 2026-08-07 16:22 UTCEPSS rescore
  17. 2026-08-06 13:42 UTCEPSS rescore
  18. 2026-08-05 21:24 UTCOSV refresh
  19. 2026-08-05 19:12 UTCEPSS rescore
  20. 2026-08-04 15:04 UTCEPSS rescore
  21. 2026-08-04 10:31 UTCEPSS rescore
  22. 2026-08-01 04:11 UTCEPSS rescore
  23. 2026-07-30 01:26 UTCEPSS rescore
  24. 2026-07-30 01:26 UTCEPSS rescore
  25. 2026-07-28 15:31 UTCEPSS rescore
  26. 2026-07-26 14:50 UTCEPSS rescore
  27. 2026-07-25 14:13 UTCEPSS rescore
  28. 2026-07-24 14:13 UTCEPSS rescore
  29. 2026-07-23 14:14 UTCEPSS rescore
  30. 2026-07-23 01:21 UTCEG score recompute
  31. 2026-07-23 00:22 UTCEG score recompute
  32. 2026-07-22 22:00 UTCEG score recompute
  33. 2026-07-22 14:04 UTCEPSS rescore
  34. 2026-07-21 15:21 UTCEPSS rescore
  35. 2026-07-21 15:21 UTCEPSS rescore
  36. 2026-07-20 17:03 UTCEPSS rescore
  37. 2026-07-19 22:38 UTCOSV refresh
  38. 2026-07-19 14:27 UTCEPSS rescore
  39. 2026-07-19 14:27 UTCEPSS rescore
  40. 2026-07-18 10:00 UTCEPSS rescore
  41. 2026-07-16 16:59 UTCEPSS rescore
  42. 2026-07-15 16:54 UTCEPSS rescore
  43. 2026-07-15 16:54 UTCEPSS rescore
  44. 2026-07-12 05:42 UTCEPSS rescore
  45. 2026-07-11 08:23 UTCEPSS rescore
  46. 2026-07-09 19:05 UTCEPSS rescore
  47. 2026-07-09 19:05 UTCEPSS rescore
  48. 2026-07-08 15:10 UTCEPSS rescore
  49. 2026-07-07 13:42 UTCEPSS rescore
  50. 2026-07-07 13:42 UTCEPSS rescore
  51. 2026-07-05 02:26 UTCEPSS rescore
  52. 2026-07-02 12:50 UTCOSV refresh
  53. 2026-07-01 15:02 UTCEPSS rescore
  54. 2026-06-30 23:19 UTCEPSS rescore
  55. 2026-06-30 23:19 UTCEPSS rescore
  56. 2026-06-28 14:04 UTCEPSS rescore
  57. 2026-06-28 04:53 UTCEPSS rescore
  58. 2026-06-27 03:05 UTCEPSS rescore
  59. 2026-06-25 13:47 UTCEPSS rescore
  60. 2026-06-25 13:47 UTCEPSS rescore
  61. 2026-06-24 14:02 UTCEPSS rescore
  62. 2026-06-24 14:02 UTCEPSS rescore
  63. 2026-06-23 21:30 UTCEPSS rescore
  64. 2026-06-21 14:54 UTCEPSS rescore
  65. 2026-06-21 14:54 UTCEPSS rescore
  66. 2026-06-21 01:57 UTCEPSS rescore
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  68. 2026-06-18 17:50 UTCEPSS rescore
  69. 2026-06-17 17:50 UTCEPSS rescore
  70. 2026-06-17 17:49 UTCEPSS rescore
  71. 2026-06-16 17:50 UTCEPSS rescore
  72. 2026-06-16 17:50 UTCEPSS rescore
  73. 2026-06-15 17:45 UTCEPSS rescore
  74. 2026-06-14 23:14 UTCEPSS rescore
  75. 2026-06-14 11:43 UTCOSV refresh

Publicly available exploits

(2 references)

Working exploit code is in the public domain (2 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCtina94happy/Spring-Web-5xx-Mitigated-version
    First seen Nov 20, 2023

    Mitigated version for CVE-2016-1000027 spring web.

    Open source ↗
  • GitHub PoCartem-smotrakov/cve-2016-1000027-poc
    First seen Feb 1, 2021

    PoC for CVE-2016-1000027

    Open source ↗

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2016-1000027?
CVE-2016-1000027 is a critical vulnerability published on January 2, 2020. Pivotal Spring Framework through 5.3.16 suffers from a potential remote code execution (RCE) issue if used for Java deserialization of untrusted data. Depending on how the library is implemented within a product, this issue may or not occur, and authentication may be required. NOTE: the vendor's…
When was CVE-2016-1000027 disclosed?
CVE-2016-1000027 was first published on January 2, 2020, with the most recent update on October 7, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2016-1000027 actively exploited?
CVE-2016-1000027 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 33% probability of exploitation in the next 30 days (98th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2016-1000027?
CVE-2016-1000027 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2016-1000027?
A fix for CVE-2016-1000027 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

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