What is CVE-2010-2063?

CVE-2010-2063 is a vulnerability in Samba, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. Published 2010-06-17.

Is CVE-2010-2063 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Samba

CVE-2010-2063

Buffer overflow in the SMB1 packet chaining implementation in the chain_reply function in process.c in smbd in Samba 3.0.x before 3.3.13 allows remote attackers to cause a denial of service (memory corruption and daemon crash) or possibly execute arbitrary code via a crafted field in a packet.

Vulnerability class: Buffer Overflow

Published 2010-06-17 · last modified 2026-06-16.

CVSS v2 metric

CVSS v2 base score 7.5 (High). Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.786 (99.6th percentile), scored 2026-10-17.

High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.786 · newest: 0.786 · change: 0.000

Affected products

Samba
Canonical Ubuntu Linux — versions 6.06, 9.04, 8.04
Debian Linux — versions 5.0

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

Public proof-of-concept exploits

References

marc.info/ (vendor-advisory, Mailing List, Third Party Advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/59481 (Third Party Advisory, VDB Entry, vdb-entry)
osvdb.org/65518 (vdb-entry, Broken Link)
marc.info/ (vendor-advisory, Mailing List, Third Party Advisory)
www.securityfocus.com/bid/40884 (Third Party Advisory, VDB Entry, vdb-entry)
marc.info/ (mailing-list, Patch, Mailing List, Third Party Advisory)
secunia.com/advisories/40210 (Third Party Advisory, third-party-advisory)
www.samba.org/samba/ftp/history/samba-3.3.13.html (Vendor Advisory)
www.samba.org/samba/ftp/patches/security/samba-3.3.12-CVE-2010-2063.patch (Patch, Vendor Advisory)
secunia.com/advisories/40145 (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2010-2063?: CVE-2010-2063 is a vulnerability in Samba, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. Published 2010-06-17.
Is CVE-2010-2063 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.