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CVE-2007-0556

20
FAUCET Score

CVE-2007-0556 describes a denial-of-service vulnerability in the query planner of PostgreSQL versions prior to 8.0.11, 8.1.7, and 8.2.2. An authenticated attacker can exploit this flaw by using an "ALTER COLUMN TYPE" SQL statement to crash the server and potentially read arbitrary memory, leading to data exposure. The vulnerability has a CVSS score of 6.6, indicating high impact on confidentiality and availability, but requires high attack complexity and authenticated access. There is no known active exploitation, publicly available exploit code, or significant community discussion beyond a single mention.

Impacted Technologies

VendorProductVersion(s)CPE
7.3.7CPE matchmatch criteria
cpe:2.3:a:postgresql:postgresql:7.3.7:*:*:*:*:*:*:*
1.0CPE matchmatch criteria
cpe:2.3:a:postgresql:postgresql:1.0:*:*:*:*:*:*:*
1.01CPE matchmatch criteria
cpe:2.3:a:postgresql:postgresql:1.01:*:*:*:*:*:*:*
1.02CPE matchmatch criteria
cpe:2.3:a:postgresql:postgresql:1.02:*:*:*:*:*:*:*
1.09CPE matchmatch criteria
cpe:2.3:a:postgresql:postgresql:1.09:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.6MEDIUM

AV:N/AC:H/Au:S/C:C/I:N/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
SINGLE
Exploitability Score
3.9
Impact Score
9.2
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.94%
Probability of exploitation in next 30 days
EPSS Percentile
85.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0294 is in the 92nd percentile among its peer group of 1,425 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 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: postgresql-0:8.1.8-1.el5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Web Application Stack for RHEL 4Fixed in: postgresql-0:8.1.7-3.el4s1.1
View patch

Vendor Advisories (1)

redhatCVE-2007-0556Moderate

security flaw

Feb 5, 2007

References

fedoranews.org / cms/node/2554
lists.rpath.com / pipermail/security-announce/2007-February/000141.html
osvdb.org / 33302
secunia.com / advisories/24028
secunia.com / advisories/24033
Vendor Advisory
secunia.com / advisories/24042
secunia.com / advisories/24050
secunia.com / advisories/24057
secunia.com / advisories/24151
secunia.com / advisories/24315
secunia.com / advisories/24513
secunia.com / advisories/24577
secunia.com / advisories/25220
security.gentoo.org / glsa/glsa-200703-15.xml
securitytracker.com / id
exchange.xforce.ibmcloud.com / vulnerabilities/32191
issues.rpath.com / browse/RPL-1025
issues.rpath.com / browse/RPL-830
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11353
sunsolve.sun.com / search/document.do
support.avaya.com / elmodocs2/security/ASA-2007-117.htm
usn.ubuntu.com / 417-1
mandriva.com / security/advisories
novell.com / linux/security/advisories/2007_10_sr.html
postgresql.org / support/security
redhat.com / support/errata/RHSA-2007-0067.html
redhat.com / support/errata/RHSA-2007-0068.html
securityfocus.com / archive/1/459280/100/0/threaded
securityfocus.com / archive/1/459448/100/0/threaded
securityfocus.com / bid/22387
trustix.org / errata/2007/0007
ubuntu.com / usn/usn-417-2
vupen.com / english/advisories/2007/0478
vupen.com / english/advisories/2007/0774