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CVE-2001-1554

19
FAUCET Score

CVE-2001-1554 describes a denial-of-service vulnerability in IBM AIX 4.3.0, where improper unlocking of IPPMTU_LOCK allows remote attackers to hang the system using specially crafted Path Maximum Transmit Unit (PMTU) IP packets. This medium-severity vulnerability (CVSS 5.0) can be exploited remotely with low attack complexity, leading to a complete loss of availability. While there is no known active exploitation, public exploit code, or Metasploit/Nuclei modules, the vulnerability has garnered significant community discussion with 10 mentions, indicating some level of awareness.

Impacted Technologies

VendorProductVersion(s)CPE
430CPE matchmatch criteria
cpe:2.3:o:ibm:aix:430:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.24%
Probability of exploitation in next 30 days
EPSS Percentile
66.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0124 is in the 45th percentile among its peer group of 23,705 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

archives.neohapsis.com / archives/aix/2001-q4/0009.html