CVE-2009-2855

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

36.73% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 98.4% of scored records. A rank, not a probability.

NVD base score

The NVD has published no score for this record

NVD CVSS vector

No NVD score to derive

NVD analysis status

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

Red Hat severity

Low. 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

2009-08-18 20:41Z17 YR AGO

Last updated

2024-08-07 06:07Z2 YR AGO

Reserved

2009-08-18

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-20Improper Input ValidationClass

Data version

5.1

Document digest

039d0b1aaffd4df19cc380d4e74a765ca10d48eb8f44ca33c53ee707b20f00be

• www.openwall.com[oss-security] 20090803 Re: squid DoS in external auth header parserhttp://www.openwall.com/lists/oss-security/2009/08/03/3mailing-listx_refsource_MLIST
• www.securityfocus.com36091http://www.securityfocus.com/bid/36091vdb-entryx_refsource_BID
• bugs.debian.orghttp://bugs.debian.org/cgi-bin/bugreport.cgi?bug=534982x_refsource_CONFIRM
• www.openwall.com[oss-security] 20090804 Re: squid DoS in external auth header parserhttp://www.openwall.com/lists/oss-security/2009/08/04/6mailing-listx_refsource_MLIST
• www.squid-cache.orghttp://www.squid-cache.org/bugs/show_bug.cgi?id=2704x_refsource_MISC
• www.squid-cache.orghttp://www.squid-cache.org/bugs/show_bug.cgi?id=2541x_refsource_CONFIRM
• www.securitytracker.com1022757http://www.securitytracker.com/id?1022757vdb-entryx_refsource_SECTRACK
• oval.cisecurity.orgoval:org.mitre.oval:def:10592https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10592vdb-entrysignaturex_refsource_OVAL
• bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=518182x_refsource_CONFIRM
• www.openwall.com[oss-security] 20090720 squid DoS in external auth header parserhttp://www.openwall.com/lists/oss-security/2009/07/20/10mailing-listx_refsource_MLIST
• exchange.xforce.ibmcloud.comsquid-strlistgetitem-dos(52610)https://exchange.xforce.ibmcloud.com/vulnerabilities/52610vdb-entryx_refsource_XF
• bugs.debian.orghttp://bugs.debian.org/cgi-bin/bugreport.cgi?msg=31%3Bfilename=diff%3Batt=1%3Bbug=534982x_refsource_MISC