CVE-2014-4503: The parse_notify function in util.c in sgminer before 4.2.2 and cgminer 3.3.0 through 4.0.1 allows man-in-the-

Routine

MEDIUM 4.3UPGRADEDOWNGRADE

CVE-2014-4503 is a medium-severity flaw (CVSS 4.3) affecting sgminer, cgminer. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The parse_notify function in util.c in sgminer before 4.2.2 and cgminer 3.3.0 through 4.0.1 allows man-in-the-middle attackers to cause a denial of service (application exit) via a crafted (1) bbversion, (2) prev_hash, (3) nbit, or (4) ntime parameter in a mining.notify action stratum message.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	1.2% (top 31%)
CISA exploited list	No
Weakness	CWE-20
Published	2014-07-23
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: cgminer project · sgminer project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2014-07-23 14:55 UTCPublished CVE record published
2026-06-17 00:10 UTCUpdated Record last modified

sgminer project sgminer UPGRADE

Affected: <= 4.2.1 · 4.0.0 · 4.1.0 · 4.1.153 · 4.1.242 · 4.1.271 · 4.2.0

Fixed in: newer than 4.2.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy sgminer || rpm -q sgminer || sgminer --version

2. UPGRADE to newer than 4.2.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade sgminer

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade sgminer

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

cgminer project cgminer DOWNGRADE

Affected: 3.3.0 · 3.3.1 · 3.3.2 · 3.3.3 · 3.3.4 · 3.4.0 · 3.4.1 · 3.4.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.3.0

1. Check installed version

apt-cache policy cgminer || rpm -q cgminer || cgminer --version

2. No fixed release: DOWNGRADE to a release before 3.3.0 (Debian / Ubuntu)

apt-cache madison cgminer sudo apt install cgminer=<VERSION_BEFORE_3.3.0> sudo apt-mark hold cgminer

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

dnf --showduplicates list cgminer sudo dnf downgrade cgminer-<VERSION_BEFORE_3.3.0> sudo dnf versionlock add cgminer

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-2014-4503?

sgminer: upgrade to newer than 4.2.1; cgminer: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2014-4503 being exploited?

CVE-2014-4503 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-2014-4503 affect?

CVE-2014-4503 affects sgminer, cgminer. Severity is medium (CVSS 4.3). The parse_notify function in util.c in sgminer before 4.2.2 and cgminer 3.3.0 through 4.0.1 allows man-in-the-middle attackers to cause a denial of service (application exit) via a crafted (1) bbversion, (2) prev_hash, (3) nbit, or (4) ntim

How urgent is CVE-2014-4503?

Priority 37/100. Public exploit reference

Related CVEs

CVE-2014-4502 HIGH 10.0 UPGRADE UPGRADE Multiple heap-based buffer overflows in the parse_notify function in sgminer before 4.2.2, cgminer before 4.3.
CVE-2014-4501 HIGH 10.0 UPGRADE UPGRADE Multiple stack-based buffer overflows in sgminer before 4.2.2, cgminer before 4.3.5, and BFGMiner before 3.3.0

References

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