Answer in brief
CVE-2026-75538 records a High severity (CVSS 8.2) vulnerability in A Signed Length Overflow in Erlang/OTP's inet TCP Driver Overflows the Receive Buffer Into BEAM VM Memory From an Unauthenticated Peer. The current sources do not mark it as known exploited. The current feed maps Erlang/erlang/otp (generic), Erlang/OTP (generic), Erlang/OTP (generic), Erlang/OTP (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.2. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Erlang/erlang/otp (generic), Erlang/OTP (generic), Erlang/OTP (generic), Erlang/OTP (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Erlang/erlang/otpgeneric | >=84adefa331c4159d432d22840663c38f155cd4c1 <08e8efdba8500d2d6f54c6b1de1492b228017c9b | 08e8efdba8500d2d6f54c6b1de1492b228017c9b |
| Erlang/OTPgeneric | >=84adefa331c4159d432d22840663c38f155cd4c1 <08e8efdba8500d2d6f54c6b1de1492b228017c9b | 08e8efdba8500d2d6f54c6b1de1492b228017c9b |
| Erlang/OTPgeneric | >=17.0 <27.3.4.17 || >=28.0 <28.5.0.6 || >=29.0 <29.0.6 | 27.3.4.17, 28.5.0.6, 29.0.6 |
| Erlang/OTPgeneric | >=6.0 <15.2.7.13 || >=16.0 <16.4.0.6 || >=17.0 <17.0.6 | 15.2.7.13, 16.4.0.6, 17.0.6 |
Published upstream
Sep 1, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 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 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.
Quoted source text, attributed separately from HOL analysis.