Buffer overflow in htdigest in Apache 1.3.26 and 1.3.27 may allow attackers to execute arbitrary code via a long user argument.

Are you affected?

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• cpe apache/http server1.3.1
• cpe apache/http server1.3.11
• cpe apache/http server1.3.3
• cpe apache/http server1.3.4
• cpe apache/http server1.3.6
• cpe apache/http server1.3.9

How to fix CVE-2002-1658

• No stored fix

  No vendor fix text is stored. Use the linked advisory before you change production.

• Version check

  Seen in 1.3.1 · 5 other packages on the advisory

• Advisory

  Open the cve_org record and follow its fix.

• Official advisories

  • CVE.org · cve.org
  • Monitored products — critical · nvd.nist.gov

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Technology hubs

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Dec 31, 2002 · Monitored products — critical

   Detected

   Buffer overflow in htdigest in Apache 1.3.26 and 1.3.27 may allow attackers to execute arbitrary code via a long user argument. NOTE: since htdigest is normally only locally accessible and not setuid or setgid, there are few attack vectors which would lead to an escalation of privileges, unless htdigest is executed from a CGI program. Therefore this may not be a vulnerability.

2. Jun 16, 2026 · Monitored products — critical

   Updated

   Buffer overflow in htdigest in Apache 1.3.26 and 1.3.27 may allow attackers to execute arbitrary code via a long user argument. NOTE: since htdigest is normally only locally accessible and not setuid or setgid, there are few attack vectors which would lead to an escalation of privileges, unless htdigest is executed from a CGI program. Therefore this may not be a vulnerability.

Sources

• CVE.orgVulnerability recordCVE-2002-1658

  Official CVE identifier

  cve.org
• Monitored products — criticalVendor advisoryCVE-2002-1658

  Buffer overflow in htdigest in Apache 1.3.26 and 1.3.27 may allow attackers to execute arbitrary code via a long user argument. NOTE: since htdigest is normally only locally accessible and not setuid or setgid, there are few attack vectors which would lead to an escalation of privileges, unless htdigest is executed from a CGI program. Therefore this may not be a vulnerability.

  nvd.nist.gov

References

• Reference · marc.info
• Reference · securityfocus.com
• Reference · exchange.xforce.ibmcloud.com
• Exploit · sardonix.org

Freshness

Last verified in this catalog Nov 3, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

• CVE.orgNov 4, 2026
• Monitored products — criticalNov 3, 2026