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CVE-2020-4956

16
FAUCET Score

CVE-2020-4956 is a denial-of-service vulnerability affecting IBM Spectrum Protect Operations Center versions 7.1 and 8.1. A remote attacker with low privileges can exploit a flaw in the RPC mechanism by repeatedly setting and dumping a large cache value, leading to the consumption of all memory resources. This vulnerability has a CVSS score of 4.8 (Medium) due to its network-adjacent attack vector and high impact on availability, though it requires high attack complexity. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 7.1.0.000, < 7.1.13.000CPE matchmatch criteria
cpe:2.3:a:ibm:spectrum_protect_operations_center:*:*:*:*:*:*:*:*
>= 8.1.0.000, < 8.1.10.200CPE matchmatch criteria
cpe:2.3:a:ibm:spectrum_protect_operations_center:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

4.8MEDIUM

CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
ADJACENT_NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.2
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.42%
Probability of exploitation in next 30 days
EPSS Percentile
34.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0042 is in the 36th percentile among its peer group of 74 CVEs.

Social Chatter

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

Vendor Patches (7)

esetvendor investigatingvia llm_extracted
hyperledgervendor investigatingvia llm_extracted
mariadbvendor investigatingvia llm_extracted
omronvendor investigatingvia llm_extracted
openrefinevendor investigatingvia llm_extracted
pnpmvendor investigatingvia llm_extracted
twiliovendor investigatingvia llm_extracted

Vendor Advisories (7)

twiliollm-twilio-d92493ac5c5eb1f3HIGH

IBM Spectrum Protect Operations Center 8.1.10 Multiple Vulnerabilities

Feb 15, 2021
esetllm-eset-2c3c8202014bde18HIGH

IBM Spectrum Protect Operations Center 8.1.10 Multiple Vulnerabilities

Feb 15, 2021
hyperledgerllm-hyperledger-cd7d80fc5f9a1118HIGH

IBM Spectrum Protect Operations Center 8.1.10 Multiple Vulnerabilities

Feb 15, 2021
pnpmllm-pnpm-228262bb6a898ed0HIGH

IBM Spectrum Protect Operations Center 8.1.10 Multiple Vulnerabilities

Feb 15, 2021
omronllm-omron-38f2e66983718266HIGH

IBM Spectrum Protect Operations Center 8.1.10 Multiple Vulnerabilities

Feb 15, 2021
openrefinellm-openrefine-772cd6c348d83400HIGH

IBM Spectrum Protect Operations Center 8.1.10 Multiple Vulnerabilities

Feb 15, 2021
mariadbllm-mariadb-8b701b7cf942eb80HIGH

IBM Spectrum Protect Operations Center 8.1.10 Multiple Vulnerabilities

Feb 15, 2021

References

exchange.xforce.ibmcloud.com / vulnerabilities/192156
VDB EntryVendor Advisory
ibm.com / support/pages/node/6404966
PatchVendor Advisory