CVE-2010-2063

CVE-2010-2063 is a high-severity vulnerability in Samba with a CVSS 2.0 base score of 7.5. Its EPSS exploit-prediction score of 79% places it in the 100th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-119.

Key facts

• Severity: High (CVSS 2.0 base score 7.5)
• EPSS exploit prediction: 79% (100th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-119
• Affected product: Samba
• Published: 2010-06-17
• Last modified: 2026-06-16

Description

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.

Frequently asked questions

What is 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.

How severe is CVE-2010-2063?

CVE-2010-2063 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2010-2063 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 79% (100th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2010-2063?

CVE-2010-2063 primarily affects Samba. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2010-2063?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2010-2063 published?

CVE-2010-2063 was published on 2010-06-17 and last updated on 2026-06-16.

References

• http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=873
• http://lists.apple.com/archives/security-announce/2010//Aug/msg00003.html
• http://lists.opensuse.org/opensuse-security-announce/2010-08/msg00001.html
• http://marc.info/?l=bugtraq&m=129138831608422&w=2
• http://marc.info/?l=bugtraq&m=130835366526620&w=2
• http://marc.info/?l=samba-announce&m=127668712312761&w=2
• http://osvdb.org/65518
• http://secunia.com/advisories/40145
• http://secunia.com/advisories/40210
• http://secunia.com/advisories/40221
• http://secunia.com/advisories/40293
• http://secunia.com/advisories/42319
• http://slackware.com/security/viewer.php?l=slackware-security&y=2010&m=slackware-security.471914
• http://support.apple.com/kb/HT4312
• http://ubuntu.com/usn/usn-951-1
• http://www.debian.org/security/2010/dsa-2061
• http://www.mandriva.com/security/advisories?name=MDVSA-2010:119
• http://www.redhat.com/support/errata/RHSA-2010-0488.html
• http://www.samba.org/samba/ftp/history/samba-3.3.13.html
• http://www.samba.org/samba/ftp/patches/security/samba-3.0.37-CVE-2010-2063.patch
• http://www.samba.org/samba/ftp/patches/security/samba-3.3.12-CVE-2010-2063.patch
• http://www.samba.org/samba/security/CVE-2010-2063.html
• http://www.securityfocus.com/bid/40884
• http://www.securitytracker.com/id?1024107
• http://www.vupen.com/english/advisories/2010/1486
• http://www.vupen.com/english/advisories/2010/1504
• http://www.vupen.com/english/advisories/2010/1505
• http://www.vupen.com/english/advisories/2010/1507
• http://www.vupen.com/english/advisories/2010/1517
• http://www.vupen.com/english/advisories/2010/3063

Affected products (5)

• cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:8.04:*:*:*:-:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:9.04:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:5.0:*:*:*:*:*:*:*

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