CVE-2002-1870: Simple Web Server (SWS) 0.0.4 through 0.1.0 does not properly handle when the recv function call fails, which

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HIGH 7.5DOWNGRADE

CVE-2002-1870 is a high-severity flaw (CVSS 7.5) affecting sws simple web server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Simple Web Server (SWS) 0.0.4 through 0.1.0 does not properly handle when the recv function call fails, which may allow remote attackers to overwrite program data or perform actions on an uninitialized heap, leading to a denial of service and possibly code execution.

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	2.7% (top 14%)
CISA exploited list	No
Published	2002-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: sws

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2002-12-31 05:00 UTCPublished CVE record published
2026-06-16 22:00 UTCUpdated Record last modified

sws sws simple web server DOWNGRADE

Affected: 0.0.3 · 0.0.4 · 0.1.0 · 0.1.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.0.3

1. Check installed version

apt-cache policy sws-simple-web-server || rpm -q sws-simple-web-server || sws-simple-web-server --version

2. No fixed release: DOWNGRADE to a release before 0.0.3 (Debian / Ubuntu)

apt-cache madison sws-simple-web-server sudo apt install sws-simple-web-server=<VERSION_BEFORE_0.0.3> sudo apt-mark hold sws-simple-web-server

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list sws-simple-web-server sudo dnf downgrade sws-simple-web-server-<VERSION_BEFORE_0.0.3> sudo dnf versionlock add sws-simple-web-server

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2002-1870?

sws simple web server: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2002-1870 being exploited?

CVE-2002-1870 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2002-1870 affect?

CVE-2002-1870 affects sws simple web server. Severity is high (CVSS 7.5). Simple Web Server (SWS) 0.0.4 through 0.1.0 does not properly handle when the recv function call fails, which may allow remote attackers to overwrite program data or perform actions on an uninitialized heap, leading to a denial of service a

How urgent is CVE-2002-1870?

Priority 48/100. High severity

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References

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