🛡️ CVE-2026-40355 on Debian 13 (Root.io) — rootio-krb5

🟠 CVSS 8.0 — High ✅ No Known Exploit OSV

8.0

CVSS Score

0 Low4 Medium7 High9 Critical10

Description

CVE-2026-40355 in rootio-krb5 - Patched by Root

Root has patched CVE-2026-40355 in the rootio-krb5 package for Root:Debian:13. Multiple fixed versions available.

Distribution advisory

This page covers CVE-2026-40355 as tracked by Debian 13 (Root.io), for the package rootio-krb5. The fix is available in version 1.21.3-5.root.io.1; earlier versions remain affected.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Weakness class

ROOT-OS-DEBIAN-13-CVE-2026-40355 is classified as CWE-476: NULL Pointer Dereference. A pointer that can be null is used without a check, crashing the process.

Affected software

ROOT-OS-DEBIAN-13-CVE-2026-40355 is recorded against 1 package.

rootio-krb5 (fixed in 1.21.3-5.root.io.1)

Timeline and source

Published on 15 May 2026 and last revised on 14 July 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

CVE-2026-40355 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

BellSoft Base record Debian Debian 12 (Root.io)Ubuntu

Details

Severity HIGH

CVSS Score 8.0

CVSS Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE N/A

Public Exploit ✅ No

Source OSV

Published 2026-05-15

Updated 2026-08-20

Modified 2026-07-14

Fix URL N/A

Affected Packages

Software	From version	Fixed in
rootio-krb5	—	1.21.3-5.root.io.1

References

N/A

🔗 NVD 🔗 Mitre

Similar Threats

Site Security Check

Is rootio-krb5 part of your stack?

ROOT-OS-DEBIAN-13-CVE-2026-40355 is rated CVSS 8.0 High. BotEraser scans your installation against known CVE records and tells you whether this vulnerability applies to the versions you actually run.

Scan My Site Free →

No credit card required · Results in minutes

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.