CVE-2015-5237

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 5.0% (91st 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
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 5.0%CVSS: 8.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

protobuf allows remote authenticated attackers to cause a heap-based buffer overflow.

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
46
EG Risk 46/100CISA 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
Severity88% × 45%
Exploitation5% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track or 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
5.0%
EPSS %ILE
91st
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track or 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 (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). 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

September 25, 2017

Last Modified

June 17, 2026

Advisory Details (10)

Auto-updated Aug 12, 2026
Patch available. Sources: redhat.
generic
https://lists.apache.org/thread.html/r02e39d7beb32eebcdbb4b516e95f67d71c90d5d462b26f4078d21eeb%40%3Cuser.flink.apache.org%3E
generic
https://lists.apache.org/thread.html/r02e39d7beb32eebcdbb4b516e95f67d71c90d5d462b26f4078d21eeb%40%3Cdev.flink.apache.org%3E
generic
https://lists.apache.org/thread.html/r00d9ab1fc0f1daf14cd4386564dd84f7889404438d81462c86dfa836%40%3Ccommon-dev.hadoop.apache.org%3E
generic
https://lists.apache.org/thread.html/r00097d0b5b6164ea428554007121d5dc1f88ba2af7b9e977a10572cd%40%3Cdev.hbase.apache.org%3E
generic
https://lists.apache.org/thread.html/f9bc3e55f4e28d1dcd1a69aae6d53e609a758e34d2869b4d798e13cc%40%3Cissues.drill.apache.org%3E
generic
https://lists.apache.org/thread.html/b0656d359c7d40ec9f39c8cc61bca66802ef9a2a12ee199f5b0c1442%40%3Cdev.drill.apache.org%3E
generic
https://lists.apache.org/thread.html/519eb0fd45642dcecd9ff74cb3e71c20a4753f7d82e2f07864b5108f%40%3Cdev.drill.apache.org%3E
generic

CVE-2015-5237: Integer overflow in serialization · Issue #760 · protocolbuffers/protobuf · GitHub

https://github.com/google/protobuf/issues/760
redhat

1256426 – (CVE-2015-5237) CVE-2015-5237 protobuf: integer overflow in serialization

https://bugzilla.redhat.com/show_bug.cgi?id=1256426
generic

oss-security - CVE-2015-5237: Integer overflow in protobuf serialization (currently minor)

http://www.openwall.com/lists/oss-security/2015/08/27/2

Vendor Advisories for CVE-2015-5237(1)

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

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntuprotobuf-compiler (2.6.1-1.3ubuntu0.1~esm2) @ xenial2026-05-22ubuntu

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.

Affected Packages

(9 across 9 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
protobuf3.12.4-1 ... 4.0.0~rc2-1 (62 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
protobuf3.21.12-10 ... 4.0.0~rc2-1 (30 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
protobuf3.21.12-11 ... 4.0.0~rc2-1 (20 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
protobuf3.21.12-11 ... 4.0.0~rc2-1 (19 versions)
  • every version on: no fix on record
—
Go(1)
PackageVulnerable rangeFix by version rangeDependents
github.com/protocolbuffers/protobuf—
  • every version up to 3.4.0: fixed in 3.4.0
—
Maven(1)
PackageVulnerable rangeFix by version rangeDependents
com.google.protobuf:protobuf-parent3.0.0 ... 3.3.1 (10 versions)
  • every version up to 3.4.0: fixed in 3.4.0
—
NuGet(1)
PackageVulnerable rangeFix by version rangeDependents
Google.Protobuf0.0.1-test1 ... 3.3.0 (11 versions)
  • every version up to 3.4.0: fixed in 3.4.0
—
Packagist(1)
PackageVulnerable rangeFix by version rangeDependents
google/protobufv3.1.0-alpha-1 ... v3.4.0rc3 (9 versions)
  • every version up to 3.4.0: fixed in 3.4.0
—
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
protobuf2.0.0beta ... 3.3.0 (25 versions)
  • every version up to 3.4.0: fixed in 3.4.0
—

Weakness Classification(1)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 8× in last 7d / 24× 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 157 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 23:54 UTCOSV refresh
  4. 2026-10-07 23:40 UTCEPSS rescore
  5. 2026-10-06 15:11 UTCEPSS rescore
  6. 2026-10-05 17:38 UTCEPSS rescore
  7. 2026-10-04 23:17 UTCEPSS rescore
  8. 2026-10-03 14:21 UTCEPSS rescore
  9. 2026-09-30 14:58 UTCEPSS rescore
  10. 2026-09-30 14:58 UTCEPSS rescore
  11. 2026-09-30 09:05 UTCEG score recompute
  12. 2026-09-28 13:45 UTCEPSS rescore
  13. 2026-09-27 13:40 UTCEPSS rescore
  14. 2026-09-26 15:53 UTCEPSS rescore
  15. 2026-09-26 15:53 UTCEPSS rescore
  16. 2026-09-23 13:41 UTCEPSS rescore
  17. 2026-09-19 15:35 UTCEPSS rescore
  18. 2026-09-18 19:22 UTCEPSS rescore
  19. 2026-09-18 05:50 UTCOSV refresh
  20. 2026-09-17 19:21 UTCEPSS rescore
  21. 2026-09-15 03:05 UTCEPSS rescore
  22. 2026-09-13 16:41 UTCEPSS rescore
  23. 2026-09-12 14:55 UTCEPSS rescore
  24. 2026-09-11 09:31 UTCEPSS rescore
  25. 2026-09-10 09:26 UTCEPSS rescore
Show 75 more
  1. 2026-09-07 15:56 UTCEPSS rescore
  2. 2026-09-06 13:42 UTCEPSS rescore
  3. 2026-09-04 13:55 UTCEPSS rescore
  4. 2026-09-02 14:07 UTCEPSS rescore
  5. 2026-09-01 13:48 UTCEPSS rescore
  6. 2026-09-01 03:31 UTCEPSS rescore
  7. 2026-08-30 06:07 UTCOSV refresh
  8. 2026-08-27 14:20 UTCEPSS rescore
  9. 2026-08-26 14:41 UTCEPSS rescore
  10. 2026-08-25 13:44 UTCEPSS rescore
  11. 2026-08-23 00:13 UTCEPSS rescore
  12. 2026-08-21 23:44 UTCEPSS rescore
  13. 2026-08-20 22:50 UTCEPSS rescore
  14. 2026-08-19 16:59 UTCEPSS rescore
  15. 2026-08-18 13:43 UTCEPSS rescore
  16. 2026-08-16 14:51 UTCEPSS rescore
  17. 2026-08-16 02:09 UTCEPSS rescore
  18. 2026-08-15 01:25 UTCEPSS rescore
  19. 2026-08-13 21:51 UTCOSV refresh
  20. 2026-08-12 13:46 UTCEPSS rescore
  21. 2026-08-11 13:36 UTCEPSS rescore
  22. 2026-08-09 13:42 UTCEPSS rescore
  23. 2026-08-08 16:32 UTCEPSS rescore
  24. 2026-08-07 16:22 UTCEPSS rescore
  25. 2026-08-06 13:42 UTCEPSS rescore
  26. 2026-08-05 19:12 UTCEPSS rescore
  27. 2026-08-04 15:04 UTCEPSS rescore
  28. 2026-08-04 10:31 UTCEPSS rescore
  29. 2026-08-01 04:11 UTCEPSS rescore
  30. 2026-07-30 01:26 UTCEPSS rescore
  31. 2026-07-30 01:26 UTCEPSS rescore
  32. 2026-07-29 00:47 UTCOSV refresh
  33. 2026-07-28 15:31 UTCEPSS rescore
  34. 2026-07-26 14:50 UTCEPSS rescore
  35. 2026-07-25 14:13 UTCEPSS rescore
  36. 2026-07-24 14:13 UTCEPSS rescore
  37. 2026-07-23 14:14 UTCEPSS rescore
  38. 2026-07-23 01:18 UTCEG score recompute
  39. 2026-07-23 00:20 UTCEG score recompute
  40. 2026-07-22 21:58 UTCEG score recompute
  41. 2026-07-22 14:04 UTCEPSS rescore
  42. 2026-07-21 15:21 UTCEPSS rescore
  43. 2026-07-21 15:21 UTCEPSS rescore
  44. 2026-07-20 17:03 UTCEPSS rescore
  45. 2026-07-19 14:27 UTCEPSS rescore
  46. 2026-07-19 14:27 UTCEPSS rescore
  47. 2026-07-19 02:26 UTCEPSS rescore
  48. 2026-07-19 02:26 UTCEPSS rescore
  49. 2026-07-18 10:00 UTCEPSS rescore
  50. 2026-07-16 16:59 UTCEPSS rescore
  51. 2026-07-15 16:54 UTCEPSS rescore
  52. 2026-07-15 16:54 UTCEPSS rescore
  53. 2026-07-15 01:56 UTCEPSS rescore
  54. 2026-07-13 22:26 UTCEPSS rescore
  55. 2026-07-13 22:26 UTCEPSS rescore
  56. 2026-07-12 05:42 UTCEPSS rescore
  57. 2026-07-11 17:22 UTCOSV refresh
  58. 2026-07-11 08:23 UTCEPSS rescore
  59. 2026-07-09 19:05 UTCEPSS rescore
  60. 2026-07-09 19:05 UTCEPSS rescore
  61. 2026-07-08 15:10 UTCEPSS rescore
  62. 2026-07-06 16:24 UTCEPSS rescore
  63. 2026-07-06 02:20 UTCEPSS rescore
  64. 2026-07-05 02:26 UTCEPSS rescore
  65. 2026-07-04 06:28 UTCEPSS rescore
  66. 2026-07-01 15:02 UTCEPSS rescore
  67. 2026-06-30 23:19 UTCEPSS rescore
  68. 2026-06-30 23:19 UTCEPSS rescore
  69. 2026-06-28 14:04 UTCEPSS rescore
  70. 2026-06-28 04:53 UTCEPSS rescore
  71. 2026-06-27 03:05 UTCEPSS rescore
  72. 2026-06-25 13:47 UTCEPSS rescore
  73. 2026-06-25 13:47 UTCEPSS rescore
  74. 2026-06-24 14:02 UTCEPSS rescore
  75. 2026-06-24 14:02 UTCEPSS rescore

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Same vendor

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ubuntu:USN-5769-1

Frequently asked(5)

What is CVE-2015-5237?
CVE-2015-5237 is a high vulnerability published on September 25, 2017. protobuf allows remote authenticated attackers to cause a heap-based buffer overflow.
When was CVE-2015-5237 disclosed?
CVE-2015-5237 was first published on September 25, 2017, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2015-5237 actively exploited?
CVE-2015-5237 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 5.0% probability of exploitation in the next 30 days (91st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2015-5237?
CVE-2015-5237 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2015-5237?
A fix for CVE-2015-5237 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2015-5237 are linked in the Vendor Advisories panel on this page.

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