CVE-2011-2522

CVE-2011-2522 is a medium-severity vulnerability in Samba with a CVSS 2.0 base score of 6.8. Its EPSS exploit-prediction score of 10% places it in the 95th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-352.

Key facts

• Severity: Medium (CVSS 2.0 base score 6.8)
• EPSS exploit prediction: 10% (95th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-352
• Affected product: Samba
• Published: 2011-07-29
• Last modified: 2026-06-16

Description

Multiple cross-site request forgery (CSRF) vulnerabilities in the Samba Web Administration Tool (SWAT) in Samba 3.x before 3.5.10 allow remote attackers to hijack the authentication of administrators for requests that (1) shut down daemons, (2) start daemons, (3) add shares, (4) remove shares, (5) add printers, (6) remove printers, (7) add user accounts, or (8) remove user accounts, as demonstrated by certain start, stop, and restart parameters to the status program.

Frequently asked questions

What is CVE-2011-2522?

Multiple cross-site request forgery (CSRF) vulnerabilities in the Samba Web Administration Tool (SWAT) in Samba 3.x before 3.5.10 allow remote attackers to hijack the authentication of administrators for requests that (1) shut down daemons, (2) start daemons, (3) add shares, (4) remove shares, (5) add printers, (6) remove printers, (7) add user accounts, or (8) remove user accounts, as demonstrated by certain start, stop, and restart parameters to the status program.

How severe is CVE-2011-2522?

CVE-2011-2522 has a CVSS 2.0 base score of 6.8, rated medium severity.

Is CVE-2011-2522 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-2522?

CVE-2011-2522 primarily affects Samba. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-2522?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2011-2522 published?

CVE-2011-2522 was published on 2011-07-29 and last updated on 2026-06-16.

References

• http://jvn.jp/en/jp/JVN29529126/index.html
• http://marc.info/?l=bugtraq&m=133527864025056&w=2
• http://osvdb.org/74071
• http://samba.org/samba/history/samba-3.5.10.html
• http://secunia.com/advisories/45393
• http://secunia.com/advisories/45488
• http://secunia.com/advisories/45496
• http://securityreason.com/securityalert/8317
• http://securitytracker.com/id?1025852
• http://ubuntu.com/usn/usn-1182-1
• http://www.debian.org/security/2011/dsa-2290
• http://www.exploit-db.com/exploits/17577
• http://www.itrc.hp.com/service/cki/docDisplay.do?docId=emr_na-c03008543
• http://www.mandriva.com/security/advisories?name=MDVSA-2011:121
• http://www.samba.org/samba/security/CVE-2011-2522
• http://www.securityfocus.com/bid/48899
• https://bugzilla.redhat.com/show_bug.cgi?id=721348
• https://bugzilla.samba.org/show_bug.cgi?id=8290
• https://exchange.xforce.ibmcloud.com/vulnerabilities/68843

Affected products (8)

• cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:5.0:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:6.0:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:8.04:*:*:*:-:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:10.04:*:*:*:-:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:10.10:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:11.04:*:*:*:*:*:*:*

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