CVE-2011-4135: Multiple directory traversal vulnerabilities in lmgrd in Flexera FlexNet Publisher 11.10 (aka FlexNet License

This week

HIGH 10.0DOWNGRADE

CVE-2011-4135 is a high-severity flaw (CVSS 10.0) affecting flexnet publisher. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple directory traversal vulnerabilities in lmgrd in Flexera FlexNet Publisher 11.10 (aka FlexNet License Server Manager) allow remote attackers to execute arbitrary code via vectors related to save, rename, and load operations on log files. NOTE: this might overlap CVE-2011-1389.

Why this priority

Critical severity
EPSS top 2%: very likely to be exploited
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	10.0 (High)
EPSS exploit chance	30.2% (top 2%)
CISA exploited list	No
Weakness	CWE-22
Published	2012-01-19
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: flexerasoftware

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2012-01-19 19:55 UTCPublished CVE record published
2026-06-16 23:34 UTCUpdated Record last modified

flexerasoftware flexnet publisher DOWNGRADE

Affected: 11.10

Fixed in: no fixed release known

Safe to downgrade to: a release before 11.10

1. Check installed version

apt-cache policy flexnet-publisher || rpm -q flexnet-publisher || flexnet-publisher --version

2. No fixed release: DOWNGRADE to a release before 11.10 (Debian / Ubuntu)

apt-cache madison flexnet-publisher sudo apt install flexnet-publisher=<VERSION_BEFORE_11.10> sudo apt-mark hold flexnet-publisher

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list flexnet-publisher sudo dnf downgrade flexnet-publisher-<VERSION_BEFORE_11.10> sudo dnf versionlock add flexnet-publisher

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Metasploit: FlexNet License Server Manager lmgrd Buffer Overflow

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2011-4135?

flexnet publisher: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2011-4135 being exploited?

CVE-2011-4135 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2011-4135 affect?

CVE-2011-4135 affects flexnet publisher. Severity is high (CVSS 10.0). Multiple directory traversal vulnerabilities in lmgrd in Flexera FlexNet Publisher 11.10 (aka FlexNet License Server Manager) allow remote attackers to execute arbitrary code via vectors related to save, rename, and load operations on log f

How urgent is CVE-2011-4135?

Priority 65/100. Critical severity; EPSS top 2%: very likely to be exploited; Public exploit reference

Related CVEs

CVE-2020-12081 HIGH 7.5 DOWNGRADE An information disclosure vulnerability has been identified in FlexNet Publisher lmadmin.exe 11.14.0.2
CVE-2020-12080 HIGH 7.5 DOWNGRADE A Denial of Service vulnerability has been identified in FlexNet Publisher's lmadmin.exe version 11.16.6
CVE-2019-8963 HIGH 7.5 DOWNGRADE A Denial of Service (DoS) vulnerability was discovered in FlexNet Publisher's lmadmin 11.16.5, when doing a cr
CVE-2019-8961 HIGH 7.5 DOWNGRADE A Denial of Service vulnerability related to stack exhaustion has been identified in FlexNet Publisher lmadmin
CVE-2019-8960 HIGH 7.5 DOWNGRADE A Denial of Service vulnerability related to command handling has been identified in FlexNet Publisher lmadmin

References

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