CVE-2021-43619: trustedfirmware trusted_firmware-m Classic Buffer Overflow
CVSS: 7.8v3.1HighModified
Published 01-03-2022Last modified 04-08-2024
Vulnerability summary
CVE-2021-43619 is a high (CVSS 7.8) Classic Buffer Overflow vulnerability in trustedfirmware trusted_firmware-m. EPSS estimates a 0.42% chance of exploitation in the next 30 days, higher than 34.9% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
7.8/10
010
High · v3.1 (NVD)EPSS score
0.42%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Timeline
- 01-03-2022PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
Trusted Firmware M 1.4.x through 1.4.1 has a buffer overflow issue in the Firmware Update partition. In the IPC model, a psa_fwu_write caller from SPE or NSPE can overwrite stack memory locations.
CVSS metrics
2 scores · 1 source · 2 versionsHigh 7.8Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HSourcesSingle source
Medium 4.6Preferred score · NVD (NIST)
AV:L/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
0.42%
Chance of exploitation in the next 30 days
Percentile
35%
Versus all other CVEs
30-day change
0.00 pp
From 0.42% on 20-09-2026
20-09-202620-10-2026
EPSS score0.42%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (tf-m-user-guide.trustedfirmware.org)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Trustedfirmware1 product
- trusted_firmware-m1.4.0 | 1.4.1
1 vendor · 1 product
References
4 links- tf-m-user-guide.trustedfirmware.org/docs/security/security_advisories/fwu_write_vulnerability.htmlX Refsource CONFIRMExploitPatchThird Party Advisory