CVE detail
CVE-2026-58216
An out-of-bounds read flaw was found in Samba's Kerberos Key Distribution Center's (KDC) password change (kpasswd) service. When processing malformed ASN.1-encoded Kerberos password change request, Samba server miscalculates the structure size and attempts to read up to six bytes beyond the end of the allocated buffer. While this out-of-bounds read typically results in a harmless decryption failure, if the read hits unmapped memory, it causes the KDC process to crash. An authenticated attacker can send a specially crafted kpasswd request containing malformed ASN.1 data to trigger the out-of-bounds read, which may cause the KDC process to terminate, resulting in a denial of service.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 16.1 · diversity 13.0 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 4
- within the 30d window
- Peak daily
- 4
- highest bucket
Evidence
Source links by recency
4 source links · newest first
No excerpt available.
Vendor Advisorywww.samba.orgJul 30, 2026, 4:17 PM- https://bugzilla.samba.org/show_bug.cgi?id=16087bugzilla.samba.org
No excerpt available.
Vendor Advisorybugzilla.samba.orgJul 30, 2026, 4:17 PM - https://bugzilla.redhat.com/show_bug.cgi?id=2502721bugzilla.redhat.com
No excerpt available.
Exploitbugzilla.redhat.comJul 30, 2026, 4:17 PM - https://access.redhat.com/security/cve/CVE-2026-58216access.redhat.com
No excerpt available.
Vendor Advisoryaccess.redhat.comJul 30, 2026, 4:17 PM
Exploit code
Public exploit repository references
Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.
0 repository references · best confidence N/A · max 0 stars
Related records
Similar CVEs
6 related CVEs with shared weakness or product evidence
- CVE-2026-66720CVSS 7.1 · High
The GOOSE subscriber component improperly validates the UTC timestamp field in unauthenticated IEC 61850 GOOSE (EtherType 0x88B8) Layer-2 multicast messages. A specially crafted…
- CVE-2026-66369CVSS 7.1 · High
The GOOSE parser contains an off-by-one boundary-handling flaw that can be triggered by a single unauthenticated Layer-2 multicast frame on the process bus. When specific GOOSE…
- CVE-2026-66364CVSS 7.1 · High
The GOOSE payload parser contains a boundary handling flaw that can be triggered by a single unauthenticated Layer 2 multicast frame on the process bus. When processing specific…
- CVE-2026-66360CVSS 8.7 · High
The ISO Presentation layer contains a flaw in the handling of specific parameters during normal mode negotiation. A missing length check in the processing of the encoded present…
- CVE-2026-66349CVSS 6.9 · Medium
The MMS server connection handler contains a flaw in its processing of BER-encoded request data. When an MMS confirmed request PDU containing an extended BER tag is received ove…
- CVE-2026-65421CVSS 7.1 · High
The MMS BER decoder contains a flaw in decoding fixed-width BER fields (boolean/integer): an attacker-supplied length value is not validated, causing a read past the end of a he…