CVE-2026-75538

HIGHPre-NVD 8.28.2—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.2 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5%, top 59% 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, secondary
Trending — 3 sources updated this week
8.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.2Exploit: None knownExposed: 0

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

An attacker that connects to an open Erlang TCP port that uses the inet driver with {packet,4} mode can use a signed overflow in an incorrect packet length calculation to overflow the receive buffer into the VM allocator area and beyond up to about 2 GB.

This would easily trash the allocated block's allocator metadata footer, and the next block, if any, and most likely cause the BEAM VM to crash. Utilizing this with precision enough to achieve Remote Code Execution would be extremely unfeasible.

This issue affects OTP from OTP 17.0 before OTP 27.3.4.17, from OTP 28.0 before OTP 28.5.0.6, and from OTP 29.0 before OTP 29.0.6, corresponding to erts from 6.0 before 15.2.7.13, from 16.0 before 16.4.0.6, and from 17.0 before 17.0.6. Whether OTP before OTP 17.0, corresponding to erts before 6.0, is affected is unknown.

CVSS v3
8.2
EG Score
8.2(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: Track

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
Severity82% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
41%
KEV
Not listed

Published

September 1, 2026

Last Modified

September 8, 2026

Advisory Details (4)

Auto-updated Sep 1, 2026
Patch available. Sources: github, github_commit.
github_commit

commit 08e8efdba850 (erlang/otp)

Fix landed in erlang/otp commit 08e8efdba850 — awaiting tagged release

https://github.com/erlang/otp/commit/08e8efdba8500d2d6f54c6b1de1492b228017c9b
generic

OSV - Open Source Vulnerabilities

https://osv.dev/vulnerability/EEF-CVE-2026-75538
generic

CVE-2026-75538

https://cna.erlef.org/cves/CVE-2026-75538.html
github Patch Available

A Signed Length Overflow in Erlang/OTP's inet TCP Driver Overflows the Receive Buffer Into BEAM VM Memory From an Unauthenticated Peer · Advisory · erlang/otp · GitHub

https://github.com/erlang/otp/security/advisories/GHSA-8m6r-2pj2-25pm

Vendor Advisories for CVE-2026-75538(1)

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

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFixed inDependents
erlang1:25.2.3+dfsg-1 ... 1:29.0~rc3+dfsg-4 (79 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
erlang1:27.3.4.1+dfsg-1 ... 1:29.0~rc3+dfsg-4 (40 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
erlang1:27.3.4.1+dfsg-1 ... 1:29.0~rc3+dfsg-4 (37 versions)——

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 24× in last 7d / 65× 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. 2026-09-20 04:25 UTCEG score recompute
  2. 2026-09-20 04:25 UTCVendor advisory
  3. 2026-09-19 15:38 UTCVendor advisory
  4. 2026-09-19 02:46 UTCEG score recompute
  5. 2026-09-19 02:46 UTCVendor advisory
  6. 2026-09-18 19:28 UTCEPSS rescore
  7. 2026-09-18 13:57 UTCVendor advisory
  8. 2026-09-18 01:09 UTCEG score recompute
  9. 2026-09-18 01:09 UTCVendor advisory
  10. 2026-09-17 12:21 UTCVendor advisory
  11. 2026-09-16 23:32 UTCEG score recompute
  12. 2026-09-16 23:32 UTCVendor advisory
  13. 2026-09-16 14:08 UTCEPSS rescore
  14. 2026-09-16 10:44 UTCEG score recompute
  15. 2026-09-16 10:44 UTCVendor advisory
  16. 2026-09-16 05:15 UTCEPSS rescore
  17. 2026-09-15 21:43 UTCVendor advisory
  18. 2026-09-15 08:55 UTCEG score recompute
  19. 2026-09-15 08:55 UTCVendor advisory
  20. 2026-09-15 03:12 UTCEPSS rescore
  21. 2026-09-14 20:07 UTCVendor advisory
  22. 2026-09-14 07:20 UTCVendor advisory
  23. 2026-09-13 18:32 UTCEG score recompute
  24. 2026-09-13 18:32 UTCVendor advisory
  25. 2026-09-13 05:44 UTCVendor advisory
Show 40 more
  1. 2026-09-12 16:57 UTCEG score recompute
  2. 2026-09-12 16:57 UTCVendor advisory
  3. 2026-09-12 15:02 UTCEPSS rescore
  4. 2026-09-12 04:09 UTCVendor advisory
  5. 2026-09-11 15:22 UTCEG score recompute
  6. 2026-09-11 15:22 UTCVendor advisory
  7. 2026-09-11 14:53 UTCEPSS rescore
  8. 2026-09-10 13:47 UTCEG score recompute
  9. 2026-09-10 09:35 UTCEPSS rescore
  10. 2026-09-09 12:11 UTCVendor advisory
  11. 2026-09-08 23:23 UTCEG score recompute
  12. 2026-09-08 23:23 UTCVendor advisory
  13. 2026-09-08 22:01 UTCEPSS rescore
  14. 2026-09-08 02:35 UTCEG score recompute
  15. 2026-09-08 02:35 UTCVendor advisory
  16. 2026-09-08 01:36 UTCEG score recompute
  17. 2026-09-08 01:36 UTCVendor advisory
  18. 2026-09-07 18:16 UTCEG score recompute
  19. 2026-09-07 18:16 UTCVendor advisory
  20. 2026-09-07 05:28 UTCVendor advisory
  21. 2026-09-06 16:41 UTCEG score recompute
  22. 2026-09-06 16:41 UTCVendor advisory
  23. 2026-09-06 13:48 UTCEPSS rescore
  24. 2026-09-06 03:53 UTCEG score recompute
  25. 2026-09-06 03:53 UTCVendor advisory
  26. 2026-09-05 15:06 UTCVendor advisory
  27. 2026-09-05 02:17 UTCEG score recompute
  28. 2026-09-05 02:17 UTCVendor advisory
  29. 2026-09-04 13:30 UTCEG score recompute
  30. 2026-09-04 13:30 UTCVendor advisory
  31. 2026-09-04 05:07 UTCEPSS rescore
  32. 2026-09-04 00:36 UTCVendor advisory
  33. 2026-09-03 11:47 UTCVendor advisory
  34. 2026-09-02 22:56 UTCEG score recompute
  35. 2026-09-02 14:12 UTCEPSS rescore
  36. 2026-09-01 16:25 UTCEG score recompute
  37. 2026-09-01 16:09 UTCEG score recompute
  38. 2026-09-01 15:39 UTCEG score recompute
  39. 2026-09-01 14:56 UTCEG score recompute
  40. 2026-09-01 14:53 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-75538?
CVE-2026-75538 is a high vulnerability published on September 1, 2026. An attacker that connects to an open Erlang TCP port that uses the inet driver with {packet,4} mode can use a signed overflow in an incorrect packet length calculation to overflow the receive buffer into the VM allocator area and beyond up to about 2 GB. This would easily trash the allocated…
When was CVE-2026-75538 disclosed?
CVE-2026-75538 was first published in the National Vulnerability Database on September 1, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-75538 actively exploited?
CVE-2026-75538 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 58.7% of all scored CVEs.
What is the CVSS score of CVE-2026-75538?
CVE-2026-75538 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2026-75538?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-75538, 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.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-75538

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