How severe is CVE-2018-1977?

CVE-2018-1977 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2018-1977 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-1977?

CVE-2018-1977 affects Ibm Db2. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-1977?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2018-1977 published?

CVE-2018-1977 was published on 2018-12-14 and last updated on 2026-06-17.

CVE-2018-1977

CVE-2018-1977 is a medium-severity vulnerability in Ibm Db2 with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 4.0
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Ibm Db2
Published: 2018-12-14
Last modified: 2026-06-17

Description

IBM DB2 for Linux, UNIX and Windows 11.1 (includes DB2 Connect Server) contains a denial of service vulnerability. A remote, authenticated DB2 user could exploit this vulnerability by issuing a specially-crafted SELECT statement with TRUNCATE function. IBM X-Force ID: 154032.

Frequently asked questions

What is CVE-2018-1977?: IBM DB2 for Linux, UNIX and Windows 11.1 (includes DB2 Connect Server) contains a denial of service vulnerability. A remote, authenticated DB2 user could exploit this vulnerability by issuing a specially-crafted SELECT statement with TRUNCATE function. IBM X-Force ID: 154032.
How severe is CVE-2018-1977?: CVE-2018-1977 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2018-1977 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-1977?: CVE-2018-1977 affects Ibm Db2. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-1977?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-1977 published?: CVE-2018-1977 was published on 2018-12-14 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ibm:db2:11.1:*:*:*:*:*:*:*

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