DEBIAN-CVE-2026-6986

See a problem?
Please try reporting it to the source first.
Source
https://security-tracker.debian.org/tracker/CVE-2026-6986
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-6986.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-6986
Upstream
Published
2026-04-25T17:16:33Z
Modified
2026-09-14T17:03:29Z
Severity
  • 2.9 (Low) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/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:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator
Summary
[none]
Details

A security vulnerability has been detected in Cesanta Mongoose up to 7.20. This issue affects the function mg_aes_gcm_decrypt of the file /src/tls_aes128.c of the component GCM Authentication Tag Handler. Such manipulation leads to improper verification of cryptographic signature. The attack may be performed from remote. A high complexity level is associated with this attack. The exploitability is assessed as difficult. The exploit has been disclosed publicly and may be used. Upgrading to version 7.21 is capable of addressing this issue. It is advisable to upgrade the affected component. VulDB has contacted the vendor early and they confirmed quickly, that this issue got fixed already.

References

Affected packages

Debian:12 / swupdate

Package

Name
swupdate
Purl
pkg:deb/debian/swupdate?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2022.*
2022.12+dfsg-4
2022.12+dfsg-4+deb12u1~bpo11+1
2022.12+dfsg-4+deb12u1
2022.12+dfsg-4+deb12u2
2023.*
2023.05+dfsg-1
2023.05+dfsg-2~bpo12+1
2023.05+dfsg-2
2023.05+dfsg-3
2023.05+dfsg-4
2023.05+dfsg-5~bpo12+1
2023.05+dfsg-5
2023.12+dfsg-1~bpo12+1
2023.12+dfsg-1
2023.12.1+dfsg-1~bpo12+1
2023.12.1+dfsg-1
2023.12.1+dfsg-2~bpo12+1
2023.12.1+dfsg-2
2024.*
2024.05+dfsg-1
2024.05.2+dfsg-1
2024.05.2+dfsg-2~bpo12+1
2024.05.2+dfsg-2
2024.12+dfsg-1
2024.12+dfsg-2~bpo12+1
2024.12+dfsg-2
2024.12.1+dfsg-1~bpo12+1
2024.12.1+dfsg-1
2024.12.1+dfsg-2
2024.12.1+dfsg-3~bpo12+1
2024.12.1+dfsg-3
2025.*
2025.05+dfsg-1
2025.05+dfsg-2~bpo13+1
2025.05+dfsg-2
2025.05+dfsg-3~bpo13+1
2025.05+dfsg-3
2025.12+dfsg-1
2025.12+dfsg-2~bpo13+1
2025.12+dfsg-2
2025.12+dfsg-3
2025.12+dfsg-4
2025.12+dfsg-5
2025.12+dfsg-6
2025.12+dfsg-7~bpo13+1
2025.12+dfsg-7
2025.12+dfsg-8
2025.12+dfsg-9
2025.12+dfsg-10~bpo13+1
2025.12+dfsg-10~bpo13+2
2025.12+dfsg-10
2026.*
2026.05+dfsg-1
2026.05+dfsg-2
2026.05+dfsg-3~bpo13+1
2026.05+dfsg-3
2026.05+dfsg-4
2026.05.1+dfsg-1~bpo13+1
2026.05.1+dfsg-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-6986.json"

Debian:13 / swupdate

Package

Name
swupdate
Purl
pkg:deb/debian/swupdate?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2024.*
2024.12.1+dfsg-3
2024.12.1+dfsg-3+deb13u1
2024.12.1+dfsg-3+deb13u2
2025.*
2025.05+dfsg-1
2025.05+dfsg-2~bpo13+1
2025.05+dfsg-2
2025.05+dfsg-3~bpo13+1
2025.05+dfsg-3
2025.12+dfsg-1
2025.12+dfsg-2~bpo13+1
2025.12+dfsg-2
2025.12+dfsg-3
2025.12+dfsg-4
2025.12+dfsg-5
2025.12+dfsg-6
2025.12+dfsg-7~bpo13+1
2025.12+dfsg-7
2025.12+dfsg-8
2025.12+dfsg-9
2025.12+dfsg-10~bpo13+1
2025.12+dfsg-10~bpo13+2
2025.12+dfsg-10
2026.*
2026.05+dfsg-1
2026.05+dfsg-2
2026.05+dfsg-3~bpo13+1
2026.05+dfsg-3
2026.05+dfsg-4
2026.05.1+dfsg-1~bpo13+1
2026.05.1+dfsg-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-6986.json"

Debian:14 / swupdate

Package

Name
swupdate
Purl
pkg:deb/debian/swupdate?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2025.12+dfsg-10

Affected versions

2024.*
2024.12.1+dfsg-3
2025.*
2025.05+dfsg-1
2025.05+dfsg-2~bpo13+1
2025.05+dfsg-2
2025.05+dfsg-3~bpo13+1
2025.05+dfsg-3
2025.12+dfsg-1
2025.12+dfsg-2~bpo13+1
2025.12+dfsg-2
2025.12+dfsg-3
2025.12+dfsg-4
2025.12+dfsg-5
2025.12+dfsg-6
2025.12+dfsg-7~bpo13+1
2025.12+dfsg-7
2025.12+dfsg-8
2025.12+dfsg-9
2025.12+dfsg-10~bpo13+1
2025.12+dfsg-10~bpo13+2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-6986.json"