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CVE-2011-1526

24
FAUCET Score

CVE-2011-1526 describes a vulnerability in the GSS-API FTP daemon of MIT Kerberos Version 5 Applications (krb5-appl) 1.0.1 and earlier, as well as various Linux distributions like Debian, Fedora, openSUSE, and SUSE. This flaw allows remote authenticated users to bypass group access restrictions due to a missing check for the krb5_setegid return value, enabling them to create, overwrite, delete, or read files via standard FTP commands. With a CVSS score of 6.5, this vulnerability is of medium severity, requiring network access and authentication, and potentially leading to partial confidentiality, integrity, and availability impacts. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.0.1CPE matchmatch criteria
cpe:2.3:a:mit:krb5-appl:*:*:*:*:*:*:*:*
5.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:5.0:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:6.0:*:*:*:*:*:*:*
14CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:14:*:*:*:*:*:*:*
15CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:15:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.5MEDIUM

AV:N/AC:L/Au:S/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Exploitability Score
8.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.94%
Probability of exploitation in next 30 days
EPSS Percentile
89.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0394 is in the 97th percentile among its peer group of 21,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: krb5-0:1.6.1-70.el5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: krb5-appl-0:1.0.1-2.el6_1.1
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: krb5

Vendor Advisories (1)

redhatCVE-2011-1526Important

krb5-appl: ftpd incorrect group privilege dropping (MITKRB5-SA-2011-005)

Jul 5, 2011

References

lists.fedoraproject.org / pipermail/package-announce/2011-July/062681.html
Third Party Advisory
lists.fedoraproject.org / pipermail/package-announce/2011-July/062699.html
Third Party Advisory
lists.opensuse.org / opensuse-security-announce/2011-10/msg00009.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2012-01/msg00002.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2012-01/msg00004.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2012-01/msg00005.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2012-01/msg00010.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2012-01/msg00011.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2012-01/msg00014.html
Mailing ListThird Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
secunia.com / advisories/45145
Third Party Advisory
secunia.com / advisories/45157
Third Party Advisory
secunia.com / advisories/48101
Third Party Advisory
securityreason.com / securityalert/8301
Third Party Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/68398
Third Party AdvisoryVDB Entry
web.mit.edu / kerberos/advisories/MITKRB5-SA-2011-005.txt
PatchVendor Advisory
debian.org / security/2011/dsa-2283
Third Party Advisory
mandriva.com / security/advisories
Third Party Advisory
osvdb.org / 73617
Broken Link
redhat.com / support/errata/RHSA-2011-0920.html
Third Party Advisory
securityfocus.com / archive/1/518733/100/0/threaded
Third Party AdvisoryVDB Entry
securityfocus.com / bid/48571
PatchThird Party AdvisoryVDB Entry