CVE catalog

CVE-2026-15997

Out-of-bounds write vulnerability in Legion of the Bouncy Castle Inc. BC-LTS bcprov-lts8on on ARM allows Overflow Buffers. This vulnerability is associated with program files https://github.Com/bcgi

[CVE catalog]

Severity: Low · CVSS 1.7CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:P/AU:N/R:A/V:D/RE:M/U:Amber
Published: Jul 16, 2026, 10:00:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.14% · Oct 27, 2026

Out-of-bounds write vulnerability in Legion of the Bouncy Castle Inc. BC-LTS bcprov-lts8on on ARM allows Overflow Buffers. This vulnerability is associated with program files https://github.Com/bcgit/bc-lts-java/blob/main/native_c/arm/sha/shake.C, https://github.Com/bcgit/bc-lts-java/blob/main/native_c/arm/sha/sha3.C. This issue affects BC-LTS: from 2.73.0 before 2.73.12.1. Issue is only applicable if application involved is accepting memoable SHA3 / SHAKE states from potentially untrusted sources.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	bouncycastle	sid	`1.86.2-1`	not affected
Debian	bouncycastle	forky	`1.86-1`	not affected
Debian	bouncycastle	trixie	`1.80-3`	not affected
Debian	bouncycastle	bookworm	`1.72-2`	not affected

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	bouncycastle	source	sid	`Not affected`	unimportant	Not reported	Not reported
Debian	bouncycastle	source	forky	`Not affected`	unimportant	Not reported	Not reported
Debian	bouncycastle	source	trixie	`Not affected`	unimportant	Not reported	Not reported
Debian	bouncycastle	source	bookworm	`Not affected`	unimportant	Not reported	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libbcjmail-java]Not affected
Source package: [bouncycastle]
Details (2)
- 1.72-2 · all · bookworm
  Not affected
  nvd · bouncycastle · debian · bookworm
- 1.72-2 · all · bookworm
  Not affected
  nvd · bouncycastle · debian · bookworm
[libbcmail-java]Not affected
Source package: [bouncycastle]
Details (2)
- 1.72-2 · all · bookworm
  Not affected
  nvd · bouncycastle · debian · bookworm
- 1.72-2 · all · bookworm
  Not affected
  nvd · bouncycastle · debian · bookworm
[libbcpg-java]Not affected
Source package: [bouncycastle]
Details (2)
- 1.72-2 · all · bookworm
  Not affected
  nvd · bouncycastle · debian · bookworm
- 1.72-2 · all · bookworm
  Not affected
  nvd · bouncycastle · debian · bookworm
[libbcpkix-java]Not affected
Source package: [bouncycastle]
Details (2)
- 1.72-2 · all · bookworm
  Not affected
  nvd · bouncycastle · debian · bookworm
- 1.72-2 · all · bookworm
  Not affected
  nvd · bouncycastle · debian · bookworm
[libbcprov-java]Not affected
Source package: [bouncycastle]
Details (2)
- 1.72-2 · all · bookworm
  Not affected
  nvd · bouncycastle · debian · bookworm
- 1.72-2 · all · bookworm
  Not affected
  nvd · bouncycastle · debian · bookworm
[libbctls-java]Not affected
Source package: [bouncycastle]
Details (2)
- 1.72-2 · all · bookworm
  Not affected
  nvd · bouncycastle · debian · bookworm
- 1.72-2 · all · bookworm
  Not affected
  nvd · bouncycastle · debian · bookworm
[libbcutil-java]Not affected
Source package: [bouncycastle]
Details (2)
- 1.72-2 · all · bookworm
  Not affected
  nvd · bouncycastle · debian · bookworm
- 1.72-2 · all · bookworm
  Not affected
  nvd · bouncycastle · debian · bookworm

Observed: Oct 23, 2026, 9:44:13 PM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)]