spimsimulator spim v9.1.24 and before is vulnerable to Buffer Overflow in READ_STRING_SYSCALL.

published 2025-08-22 14 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-27741

cvss: 9.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 42%
public exploits: 0; none known

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-29365 updated 2025-11-21 cvss 8.0

spim: Buffer Overflow in READ_STRING_SYSCALL

Red Hat All currently supported Red Hat products
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation: Proof of concept is public
Automatable: yes
Technical impact: total
Assessed: 14 mo ago (2025-08-22)

Exploit prediction

0.50% chance of exploitation in the next 30 days, higher than 42% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/Giles-one/spimsimulatorEscape?tab=readme-ov-file#bug1-out-of-bounds-write-in-read_input-function referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Classification

Weakness

CWE-120 Buffer Copy without Checking Size of Input
CWE-125 Out-of-bounds Read
CWE-787 Out-of-bounds Write
CWE-274 Improper Handling of Insufficient Privileges

References

github.com /Giles-one/spimsimulatorEscape?tab=readme-ov-file#bug1-out-of-bounds-write-in-read_input-function
exploit, vendor-advisory
gist.github.com /Giles-one/3a80cd1c7014e50601bd1c0dd9d41663
third-party-advisory

Sources

CVE List CVE-2025-29365
NVD CVE-2025-29365

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary