Heap based buffer overflow at ipaccess_proxy_read_msg()

published 2026-09-18 51 d ago modified 2026-09-21 48 d ago also EUVD-2026-83272

cvss: 7.5; 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 39%
public exploits: 0; none known

In osmo-bsc from 1.0.1 through 1.14.1 a heap based buffer overflow issue was found in the ipaccess_proxy_read_msg() function via IPA frame lengths.

Patch / fix

fixed in 1 distros 1 links 1

Osmocom osmo-bsc 1.14.1

osmo-bsc Debian 14 1.15.0-2

debian advisories DEBIAN-CVE-2026-75893

cgit.osmocom.org/osmo-bsc/commit/?id=2852a03c153cd9418c2a86d0b2193ac41169db… commit

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 48 d ago (2026-09-21)

Exploit prediction

0.46% chance of exploitation in the next 30 days, higher than 39% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

Osmocom osmo-bsc

Classification

Weakness

CWE-122 Heap-based Buffer Overflow

References

cgit.osmocom.org /osmo-bsc/commit/?id=2852a03c153cd9418c2a86d0b2193ac41169dbb7
patch, mitigation

Sources

CVE List CVE-2026-75893
NVD CVE-2026-75893

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