CVE-2020-36177 json
RsaPad_PSS in wolfcrypt/src/rsa.c in wolfSSL before 4.6.0 has an out-of-bounds write for certain relationships between key size and digest…
published 2021-01-06 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-23755
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.6%
- EPSS 3.6% chance of exploitation in 30 days, percentile 89%
- public exploits
- 0
- none known
Summary
RsaPad_PSS in wolfcrypt/src/rsa.c in wolfSSL before 4.6.0 has an out-of-bounds write for certain relationships between key size and digest size.
Patch / fix
- wolfssl wolfssl 4.6.0
- wolfssl Debian 13, Debian 12 4.6.0-1
debian advisories DEBIAN-CVE-2020-36177
- github.com/wolfSSL/wolfssl@63bf5dc commit
- github.com/wolfSSL/wolfssl@fb2288c commit
- github.com/wolfSSL/wolfssl#3426 pull request
- github.com/wolfSSL/wolfssl/releases/tag/v4.6.0-stable release
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
cisa ICSA-23-131-14 updated cvss 9.8
Rockwell Automation PanelView 800
-
Rockwell Automation PanelView 800-2711R-T4T 5.011, < 8.011 Rockwell Automation PanelView 800-2711R-T7T 5.011, < 8.011 Rockwell Automation PanelView 800-2711R-T10T 5.011, < 8.011affected: fixed in V8.011 compatibility.rockwellautomation.com
From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf
Exploit prediction
3.57% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- bugs.chromium.org https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26567 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 10.0 | AV:N/AC:L/Au:N/C:C/I:C/A:C |
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
-
github.com
/wolfSSL/wolfssl/commit/63bf5dc56ccbfc12a73b06327361687091a4c6f7
patch, third-party-advisory
-
github.com
/wolfSSL/wolfssl/pull/3426
patch, third-party-advisory
-
github.com
/wolfSSL/wolfssl/commit/fb2288c46dd4c864b78f00a47a364b96a09a5c0f
patch, third-party-advisory
-
bugs.chromium.org
/p/oss-fuzz/issues/detail?id=26567
exploit, mailing-list, third-party-advisory
-
github.com
/wolfSSL/wolfssl/releases/tag/v4.6.0-stable
third-party-advisory
Sources
- CVE List CVE-2020-36177
- NVD CVE-2020-36177
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.