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CVE-2002-0639: openbsd openssh Integer Overflow or Wraparound

CVSS: 10.0v2.0HighModified
AliasesDEBIAN-CVE-2002-0639
Published 02-04-2003Last modified 08-08-2024
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Vulnerability summary

CVE-2002-0639 is a high (CVSS 10.0) Integer Overflow or Wraparound vulnerability in openbsd openssh. EPSS estimates a 18.29% chance of exploitation in the next 30 days, higher than 97.2% of scored vulnerabilities. 3 public exploits are recorded.

Overall risk
90/100
0100
Critical · default modelHow is this calculated?
CVSS score
10.0/10
010
High · v2.0 (NVD)
EPSS score
18.29%
0%100%
Medium · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits3reference

Advisory lineage

Upstream 0 · Downstream 0 · Duplicates 1
CVE-2002-0390

Timeline

  1. 02-04-2003
    PublishedVulnerability first disclosed.
  2. 08-08-2024
    Last modifiedVulnerability information updated.

Description

Integer overflow in sshd in OpenSSH 2.9.9 through 3.3 allows remote attackers to execute arbitrary code during challenge response authentication (ChallengeResponseAuthentication) when OpenSSH is using SKEY or BSD_AUTH authentication.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

18.29%

Chance of exploitation in the next 30 days

Percentile

97%

Versus all other CVEs

30-day change

0.00 pp

From 18.29% on 21-09-2026

21-09-202621-10-2026
EPSS score
18.29%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

3 found
  • referenceUnverified

    Exploit Reference (marc.info)

    Maturity: unknown

  • referenceUnverified

    Exploit Reference (marc.info)

    Maturity: unknown

  • referenceUnverified

    Exploit Reference (marc.info)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • openssh< 1:3.4
Openbsd1 product

2 vendors · 2 products

References

17 links
Show all 17 references