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CVE-2020-24753

28
FAUCET Score

CVE-2020-24753 is a critical memory corruption vulnerability in Objective Open CBOR Run-time (oocborrt) versions prior to 2020-08-12. An attacker can exploit this by providing crafted CBOR input to the cbor2json decoder, leading to an uncaught error during text string decoding that uses an uninitialized stack value. This allows for memory modification, potentially causing a crash or exploitable heap corruption. Rated with a CVSS score of 9.8 (CRITICAL), this vulnerability has a low attack complexity and requires no user interaction or privileges, making it easily exploitable over a network. Successful exploitation could lead to complete compromise of confidentiality, integrity, and availability. Despite its high severity, there is currently no evidence of active exploitation, nor are there public exploit modules available in common frameworks like Metasploit or Nuclei. Community discussion and media coverage for this CVE are minimal, consistent with the majority of reported vulnerabilities.

Impacted Technologies

VendorProductVersion(s)CPE
< 2020-08-12CPE matchmatch criteria
cpe:2.3:a:objective_open_cbor_run-time_project:objective_open_cbor_run-time:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.64%
Probability of exploitation in next 30 days
EPSS Percentile
84.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0264 is in the 74th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / objsys/oocborrt/commit/539851c66778f68a244633985f6f8d0df94ea3b3
PatchThird Party Advisory
warcollar.com / cve-2020-24753.html
ExploitThird Party Advisory