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CVE-2003-0826

33
FAUCET Score

CVE-2003-0826 describes a heap-based buffer overflow vulnerability in the lsh daemon (lshd) of GNU lsh. This flaw, stemming from improper handling of long input in several functions, allows remote attackers to execute arbitrary code. With a CVSS score of 7.5, it represents a high-severity risk, requiring no authentication and having a low attack complexity, potentially leading to partial confidentiality, integrity, and availability compromise. While not listed in CISA KEV or Hot List, and lacking Metasploit/Nuclei modules, two ExploitDB entries confirm the existence of exploit code, despite minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
1.4CPE matchmatch criteria
cpe:2.3:a:gnu:lsh:1.4:*:*:*:*:*:*:*
1.4.1CPE matchmatch criteria
cpe:2.3:a:gnu:lsh:1.4.1:*:*:*:*:*:*:*
1.4.2CPE matchmatch criteria
cpe:2.3:a:gnu:lsh:1.4.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
11.82%
Probability of exploitation in next 30 days
EPSS Percentile
95.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-23162 · Sep 19, 2003
This CVE's current EPSS score of 0.1182 is in the 93rd percentile among its peer group of 51,485 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, 0.1 Mastodon, and 0.4 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

Remediation records are not available for this CVE.

References

bugs.debian.org / 211662
lists.grok.org.uk / pipermail/full-disclosure/2003-September/010496.html
lists.lysator.liu.se / pipermail/lsh-bugs/2003q3/000120.html
marc.info
marc.info
debian.org / security/2005/dsa-717