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CVE-2002-0004

27
FAUCET Score

CVE-2002-0004 is a heap corruption vulnerability in the "at" program, affecting various Linux and Unix-like distributions including Debian, Red Hat, and SUSE. This flaw allows local users to execute arbitrary code by providing a malformed execution time, leading to a double-free memory error. With a CVSS score of 7.2 (HIGH), it presents a significant risk due to its low attack complexity and potential for complete compromise of confidentiality, integrity, and availability. While not listed in CISA's KEV catalog and showing no active exploitation or community discussion, a public exploit (EDB-21229) exists, demonstrating its exploitability.

Impacted Technologies

VendorProductVersion(s)CPE
3.1CPE matchmatch criteria
cpe:2.3:a:caldera:openlinux_server:3.1:*:*:*:*:*:*:*
3.1CPE matchmatch criteria
cpe:2.3:a:caldera:openlinux_workstation:3.1:*:*:*:*:*:*:*
2.2CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:2.2:*:68k:*:*:*:*:*
2.2CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:2.2:*:alpha:*:*:*:*:*
2.2CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:2.2:*:arm:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.2HIGH

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

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.34%
Probability of exploitation in next 30 days
EPSS Percentile
68.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
ExploitDB: EDB-21229 · Jan 16, 2002
This CVE's current EPSS score of 0.0134 is in the 85th percentile among its peer group of 3,236 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.5 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 (5)

debianpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Linux 6.2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Linux 7.0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Linux 7.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Linux 7.2
View patch

Vendor Advisories (1)

redhatCVE-2002-0004

security flaw

Jan 17, 2002

References

marc.info
marc.info
online.securityfocus.com / advisories/3833
online.securityfocus.com / advisories/3969
exchange.xforce.ibmcloud.com / vulnerabilities/7909
debian.org / security/2002/dsa-102
Patch
novell.com / linux/security/advisories/2002_003_at_txt.html
redhat.com / support/errata/RHSA-2002-015.html
PatchVendor Advisory
securityfocus.com / bid/3886
ExploitPatchVendor Advisory