CVE-2011-2520

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

0.42% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 35.0% of scored records. A rank, not a probability.

NVD base score

7.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-16.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2011-07-21 23:00Z15 YR AGO

Last updated

2024-08-06 23:00Z2 YR AGO

Reserved

2011-06-15

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-502Deserialization of Untrusted DataBase

Data version

5.1

Document digest

0be7c641af4622f15d79d89d58a4e5fbe450bd7fc911dd8fad4731803c00fd68

• lists.fedoraproject.orgFEDORA-2011-9652http://lists.fedoraproject.org/pipermail/package-announce/2011-August/063314.htmlvendor-advisoryx_refsource_FEDORA
• exchange.xforce.ibmcloud.comsystemconfigfirewall-priv-escalation(68734)https://exchange.xforce.ibmcloud.com/vulnerabilities/68734vdb-entryx_refsource_XF
• www.openwall.com[oss-security] 20110718 CVE-2011-2520: flaw in system-config-firewall's usage of pickle allows privilege escalationhttp://www.openwall.com/lists/oss-security/2011/07/18/6mailing-listx_refsource_MLIST
• bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=717985x_refsource_CONFIRM
• www.redhat.comRHSA-2011:0953http://www.redhat.com/support/errata/RHSA-2011-0953.htmlvendor-advisoryx_refsource_REDHAT
• www.securityfocus.com48715http://www.securityfocus.com/bid/48715vdb-entryx_refsource_BID
• securitytracker.com1025793http://securitytracker.com/id?1025793vdb-entryx_refsource_SECTRACK
• secunia.com45294http://secunia.com/advisories/45294third-party-advisoryx_refsource_SECUNIA