CVE catalog

CVE-2025-51495

swupdate: CVE-2025-51495

Severity: High · CVSS 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: Sep 29, 2025, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.42% · Oct 25, 2026

An integer overflow vulnerability exists in the WebSocket component of Mongoose 7.5 thru 7.17. By sending a specially crafted WebSocket request, an attacker can cause the application to crash. If downstream vendors integrate this component improperly, the issue may lead to a buffer overflow.

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	swupdate	sid	`2026.05.1+git20261001+dfsg-2`	fixed
Debian	swupdate	forky	`2026.05.1+git20261001+dfsg-2`	fixed
Debian	swupdate	trixie	`2024.12.1+dfsg-3+deb13u2`	vulnerable
Debian	swupdate	bookworm	`2022.12+dfsg-4+deb12u2`	vulnerable
Debian	swupdate	bookworm-security	`2022.12+dfsg-4+deb12u3`	vulnerable
Ubuntu	swupdate	22.04	`2020.11-2`	vulnerable
Ubuntu	swupdate	22.04	`2021.04-1.1`	vulnerable
Ubuntu	swupdate	22.04	`2021.04-2`	vulnerable
Ubuntu	swupdate	22.04	`2021.04-2build1`	vulnerable
Ubuntu	swupdate	22.04	`2021.11-1`	vulnerable
Ubuntu	swupdate	24.04	`2023.05+dfsg-3`	vulnerable
Ubuntu	swupdate	24.04	`2023.05+dfsg-4`	vulnerable
Ubuntu	swupdate	24.04	`2023.05+dfsg-4build1`	vulnerable
Ubuntu	swupdate	24.04	`2023.05+dfsg-5`	vulnerable
Ubuntu	swupdate	24.04	`2023.12+dfsg-1`	vulnerable
Ubuntu	swupdate	24.04	`2023.12.1+dfsg-1ubuntu1`	vulnerable
Ubuntu	swupdate	24.04	`2023.12.1+dfsg-1ubuntu4`	vulnerable
Ubuntu	swupdate	24.04	`2023.12.1+dfsg-1ubuntu5`	vulnerable
Ubuntu	swupdate	25.10	`2024.12.1+dfsg-1build2`	vulnerable
Ubuntu	swupdate	25.10	`2024.12.1+dfsg-2`	vulnerable
Ubuntu	swupdate	25.10	`2024.12.1+dfsg-3`	vulnerable
Ubuntu	swupdate	25.10	`2025.05+dfsg-2ubuntu1`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	swupdate	source	sid	`2025.12+dfsg-1`	not yet assigned	Not reported	Not reported
Debian	swupdate	source	forky	`2025.12+dfsg-1`	not yet assigned	Not reported	Not reported
Debian	swupdate	source	trixie	`(unfixed)`	not yet assigned	Not reported	Not reported
Debian	swupdate	source	bookworm	`(unfixed)`	not yet assigned	Not reported	Not reported

Notes

[trixie] swupdate: Minor issue [bookworm] swupdate: Minor issue

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libswupdate0.1]Affected
Source package: [swupdate]
Details (4)
- 2022.12+dfsg-4+deb12u2 · amd64 · bookworm
  Affected
  dsa · swupdate · debian · bookworm; dsa · swupdate · debian · 12
- 2022.12+dfsg-4+deb12u2 · arm64 · bookworm
  Affected
  dsa · swupdate · debian · bookworm; dsa · swupdate · debian · 12
- 2024.12.1+dfsg-3~bpo12+1 · amd64 · bookworm-backports
  Affected
  dsa · swupdate · debian · bookworm; dsa · swupdate · debian · 12
- 2024.12.1+dfsg-3~bpo12+1 · arm64 · bookworm-backports
  Affected
  dsa · swupdate · debian · bookworm; dsa · swupdate · debian · 12
[libswupdate-dev]Affected
Source package: [swupdate]
Details (4)
- 2022.12+dfsg-4+deb12u2 · amd64 · bookworm
  Affected
  dsa · swupdate · debian · bookworm; dsa · swupdate · debian · 12
- 2022.12+dfsg-4+deb12u2 · arm64 · bookworm
  Affected
  dsa · swupdate · debian · bookworm; dsa · swupdate · debian · 12
- 2024.12.1+dfsg-3~bpo12+1 · amd64 · bookworm-backports
  Affected
  dsa · swupdate · debian · bookworm; dsa · swupdate · debian · 12
- 2024.12.1+dfsg-3~bpo12+1 · arm64 · bookworm-backports
  Affected
  dsa · swupdate · debian · bookworm; dsa · swupdate · debian · 12
[lua-swupdate]Affected
Source package: [swupdate]
Details (4)
- 2022.12+dfsg-4+deb12u2 · amd64 · bookworm
  Affected
  dsa · swupdate · debian · bookworm; dsa · swupdate · debian · 12
- 2022.12+dfsg-4+deb12u2 · arm64 · bookworm
  Affected
  dsa · swupdate · debian · bookworm; dsa · swupdate · debian · 12
- 2024.12.1+dfsg-3~bpo12+1 · amd64 · bookworm-backports
  Affected
  dsa · swupdate · debian · bookworm; dsa · swupdate · debian · 12
- 2024.12.1+dfsg-3~bpo12+1 · arm64 · bookworm-backports
  Affected
  dsa · swupdate · debian · bookworm; dsa · swupdate · debian · 12
[swupdate]Affected
Details (4)
- 2022.12+dfsg-4+deb12u2 · amd64 · bookworm
  Affected
  dsa · swupdate · debian · bookworm; dsa · swupdate · debian · 12
- 2022.12+dfsg-4+deb12u2 · arm64 · bookworm
  Affected
  dsa · swupdate · debian · bookworm; dsa · swupdate · debian · 12
- 2024.12.1+dfsg-3~bpo12+1 · amd64 · bookworm-backports
  Affected
  dsa · swupdate · debian · bookworm; dsa · swupdate · debian · 12
- 2024.12.1+dfsg-3~bpo12+1 · arm64 · bookworm-backports
  Affected
  dsa · swupdate · debian · bookworm; dsa · swupdate · debian · 12
[swupdate-doc]Affected
Source package: [swupdate]
Details (4)
- 2022.12+dfsg-4+deb12u2 · all · bookworm
  Affected
  dsa · swupdate · debian · bookworm; dsa · swupdate · debian · 12
- 2022.12+dfsg-4+deb12u2 · all · bookworm
  Affected
  dsa · swupdate · debian · bookworm; dsa · swupdate · debian · 12
- 2024.12.1+dfsg-3~bpo12+1 · all · bookworm-backports
  Affected
  dsa · swupdate · debian · bookworm; dsa · swupdate · debian · 12
- 2024.12.1+dfsg-3~bpo12+1 · all · bookworm-backports
  Affected
  dsa · swupdate · debian · bookworm; dsa · swupdate · debian · 12
[swupdate-www]Affected
Source package: [swupdate]
Details (4)
- 2022.12+dfsg-4+deb12u2 · all · bookworm
  Affected
  dsa · swupdate · debian · bookworm; dsa · swupdate · debian · 12
- 2022.12+dfsg-4+deb12u2 · all · bookworm
  Affected
  dsa · swupdate · debian · bookworm; dsa · swupdate · debian · 12
- 2024.12.1+dfsg-3~bpo12+1 · all · bookworm-backports
  Affected
  dsa · swupdate · debian · bookworm; dsa · swupdate · debian · 12
- 2024.12.1+dfsg-3~bpo12+1 · all · bookworm-backports
  Affected
  dsa · swupdate · debian · bookworm; dsa · swupdate · debian · 12

[Debian 13 (Trixie)]

[libswupdate0.1]Affected
Source package: [swupdate]
Details (4)
- 2024.12.1+dfsg-3+deb13u2 · amd64 · trixie
  Affected
  dsa · swupdate · debian · 13
- 2024.12.1+dfsg-3+deb13u2 · arm64 · trixie
  Affected
  dsa · swupdate · debian · 13
- 2026.05.1+dfsg-1~bpo13+1 · amd64 · trixie-backports
  Affected
  dsa · swupdate · debian · 13
- 2026.05.1+dfsg-1~bpo13+1 · arm64 · trixie-backports
  Affected
  dsa · swupdate · debian · 13
[libswupdate-dev]Affected
Source package: [swupdate]
Details (4)
- 2024.12.1+dfsg-3+deb13u2 · amd64 · trixie
  Affected
  dsa · swupdate · debian · 13
- 2024.12.1+dfsg-3+deb13u2 · arm64 · trixie
  Affected
  dsa · swupdate · debian · 13
- 2026.05.1+dfsg-1~bpo13+1 · amd64 · trixie-backports
  Affected
  dsa · swupdate · debian · 13
- 2026.05.1+dfsg-1~bpo13+1 · arm64 · trixie-backports
  Affected
  dsa · swupdate · debian · 13
[lua-swupdate]Affected
Source package: [swupdate]
Details (4)
- 2024.12.1+dfsg-3+deb13u2 · amd64 · trixie
  Affected
  dsa · swupdate · debian · 13
- 2024.12.1+dfsg-3+deb13u2 · arm64 · trixie
  Affected
  dsa · swupdate · debian · 13
- 2026.05.1+dfsg-1~bpo13+1 · amd64 · trixie-backports
  Affected
  dsa · swupdate · debian · 13
- 2026.05.1+dfsg-1~bpo13+1 · arm64 · trixie-backports
  Affected
  dsa · swupdate · debian · 13
[swupdate]Affected
Details (4)
- 2024.12.1+dfsg-3+deb13u2 · amd64 · trixie
  Affected
  dsa · swupdate · debian · 13
- 2024.12.1+dfsg-3+deb13u2 · arm64 · trixie
  Affected
  dsa · swupdate · debian · 13
- 2026.05.1+dfsg-1~bpo13+1 · amd64 · trixie-backports
  Affected
  dsa · swupdate · debian · 13
- 2026.05.1+dfsg-1~bpo13+1 · arm64 · trixie-backports
  Affected
  dsa · swupdate · debian · 13
[swupdate-doc]Affected
Source package: [swupdate]
Details (4)
- 2024.12.1+dfsg-3+deb13u2 · all · trixie
  Affected
  dsa · swupdate · debian · 13
- 2024.12.1+dfsg-3+deb13u2 · all · trixie
  Affected
  dsa · swupdate · debian · 13
- 2026.05.1+dfsg-1~bpo13+1 · all · trixie-backports
  Affected
  dsa · swupdate · debian · 13
- 2026.05.1+dfsg-1~bpo13+1 · all · trixie-backports
  Affected
  dsa · swupdate · debian · 13
[swupdate-www]Affected
Source package: [swupdate]
Details (4)
- 2024.12.1+dfsg-3+deb13u2 · all · trixie
  Affected
  dsa · swupdate · debian · 13
- 2024.12.1+dfsg-3+deb13u2 · all · trixie
  Affected
  dsa · swupdate · debian · 13
- 2026.05.1+dfsg-1~bpo13+1 · all · trixie-backports
  Affected
  dsa · swupdate · debian · 13
- 2026.05.1+dfsg-1~bpo13+1 · all · trixie-backports
  Affected
  dsa · swupdate · debian · 13

Observed: Oct 24, 2026, 5:38:53 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]