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CVE-2002-0004· NVD / CVE Program· CNA mitre

Heap corruption vulnerability in the "at" program allows local users to execute arbitrary code via a malformed execution time, which causes

Heap corruption vulnerability in the "at" program allows local users to execute arbitrary code via a malformed execution time, which causes at to free the same memory twice.

HighCVSS 7.2 · v2.0—Proof of concept No fix recorded
Published
Feb 27, 2002
Updated
Jun 16, 2026
EPSS
1.3% · 70th percentile
CWE
—
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Action score

28

Monitor

Low priority for now.

CVSS
28 / 40 · 7.2 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.3%

Affected systems

VendorProduct
calderaopenlinux server
calderaopenlinux workstation
debiandebian linux
freebsdfreebsd
mandrakesoftmandrake linux
netbsdnetbsd
redhatlinux
slackwareslackware linux
susesuse linux

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • caldera openlinux server3.1
  • caldera openlinux workstation3.1
  • debian debian linux2.2
  • freebsd freebsd4.1.1
  • freebsd freebsd4.2
  • freebsd freebsd4.3
  • freebsd freebsd4.4
  • mandrakesoft mandrake linux8.0
  • mandrakesoft mandrake linux8.1
  • netbsd netbsd1.5.2
  • redhat linux6.2
  • redhat linux7.0
  • redhat linux7.1
  • redhat linux7.2
  • slackware slackware linux7.0
  • slackware slackware linux7.1
  • slackware slackware linux8.0
  • suse suse linux6.4
  • suse suse linux7.0
  • suse suse linux7.1

Same product

caldera: all records

Other highest-scoring records for the same primary product.

  • CVE-2001-0980docview before 1.0-15 allows remote attackers to execute arbitrary commands via shell metacharacters that are processed when converting a ma
    31Monitor
  • CVE-2002-0835Preboot eXecution Environment (PXE) server allows remote attackers to cause a denial of service (crash) via certain DHCP packets from Voice-
    22Monitor
  • CVE-2003-0658Docview before 1.1-18 in Caldera OpenLinux 3.1.1, SCO Linux 4.0, OpenServer 5.0.7, configures the Apache web server in a way that allows rem
    21Monitor
  • CVE-2002-0512startkde in KDE for Caldera OpenLinux 2.3 through 3.1.1 sets the LD_LIBRARY_PATH environment variable to include the current working directo
    18Monitor
  • CVE-2002-0164Vulnerability in the MIT-SHM extension of the X server on Linux (XFree86) 4.2.1 and earlier allows local users to read and write arbitrary s
    18Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

  • Exploit-DB entry ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Exploit-DB entrylocal2002-01-16

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. First PoC-42 d
  2. Published
  3. TodaySep 30, 2026+8981 d
EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

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Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • No special conditions are required; it is repeatable.

If successful

Confidentiality
C · data can be read
Integrity
C · data or configuration can be modified
Availability
C · the service can be disrupted
Attack complexity
Low
Confidentiality impact
C
Integrity impact
C
Availability impact
C

Weakness class (CWE)

—

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records