CVE-2003-0686Pam SMB Vulnerability
Buffer overflow in PAM SMB module (pam_smb) 1.1.6 and earlier, when authenticating to a remote service, allows remote attackers to execute arbitrary code.
Published Aug 26, 2003 · Updated Mar 9, 2026 · Also known as DEBIAN-CVE-2003-0686, DSA-374
Key Facts
Patch immediately- CVE-2003-0686 is a high-severity vulnerability (CVSS 7.5 v2) affecting Pam SMB (Dave Airlie), libpam-smb (debian).
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 27% probability of exploitation in the next 30 days.
- Fixed versions are available, including libpam-smb 1.1.6-1.1woody1.
- Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Scores
CVSS v2
7.5
AV:N/AC:L/Au:N/C:P/I:P/A:P
EPSS (30-day exploit likelihood)
27%
Higher than 98.0% of all scored CVEs
Exploit maturity
Proof of concept
ATLAS score
37/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Not listed
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Proof of concept
Public exploit code
1
Proof-of-concept links
In-the-wild evidence
0
Reports of active use
Advisories And Exploit References
- advisoryRHSA-2003:261
- advisoryRHSA-2003:262
- patchDSA-374
- patchRHSA-2003:262
Description
Buffer overflow in PAM SMB module (pam_smb) 1.1.6 and earlier, when authenticating to a remote service, allows remote attackers to execute arbitrary code.
Affected Products
13 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Pam SMBDave Airlie | 1.1, 1.1.1, 1.1.2, 1.1.3, 1.1.4, 1.1.5, 1.1.6, 2.0_rc4 | n/a |
| libpam-smbdebian | See advisory | 1.1.6-1.1woody1 |
Patched Releases
libpam-smb
1.1.6-1.1woody1
Timeline
Publicly disclosed
Aug 26, 2003
Last updated
Mar 9, 2026
References
- advisoryRHSA-2003:261
- advisoryRHSA-2003:262
- patchDSA-374
- patchRHSA-2003:262
- exploitExploitDB-89
FAQ
Common Questions.
Buffer overflow in PAM SMB module (pam_smb) 1.1.6 and earlier, when authenticating to a remote service, allows remote attackers to execute arbitrary code.
Affected: Pam SMB (Dave Airlie) versions 1.1, 1.1.1, 1.1.2, 1.1.3, 1.1.4, 1.1.5, 1.1.6, 2.0_rc4; libpam-smb (debian). The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including libpam-smb 1.1.6-1.1woody1.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Is CVE-2003-0686 On Your Attack Surface?
Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.
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