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CVE mentions, exploit signals, and PoC evidence in one fast public view.

CVE detail

CVE-2021-43527

NSS (Network Security Services) versions prior to 3.73 or 3.68.1 ESR are vulnerable to a heap overflow when handling DER-encoded DSA or RSA-PSS signatures. Applications using NSS for handling signatures encoded within CMS, S/MIME, PKCS \#7, or PKCS \#12 are likely to be impacted. Applications using NSS for certificate validation or other TLS, X.509, OCSP or CRL functionality may be impacted, depending on how they configure NSS. *Note: This vulnerability does NOT impact Mozilla Firefox.* However, email clients and PDF viewers that use NSS for signature verification, such as Thunderbird, LibreOffice, Evolution and Evince are believed to be impacted. This vulnerability affects NSS < 3.73 and NSS < 3.68.1.

CVSS 9.8 · CriticalBuzz score 17.5

Buzz score

Why this CVE is surfacing

Buzz score total 17.5

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 11.0 · diversity 6.5 · KEV 0.0 · OTX 0.0 · PoC 0.0
Mention score
11.0
2 evidence mentions in the snapshot
Diversity score
6.5
2 sources across 1 categories
KEV score
0.0
No KEV entry observed
OTX score
0.0
0 OTX pulses
PoC score
0.0
0 repos · best confidence N/A
Best PoC traction
0
Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions
0
within the 30d window
Peak daily
0
highest bucket

Evidence

Source links by recency

Newest mentions first
2 source links · newest first
  • Critical Flaw in NSS Cryptographic Library Affects Several Popular ApplicationsSecurityWeek

    Mozilla on Wednesday announced the rollout of patches for a critical vulnerability in the NSS (Network Security Services) cross-platform cryptographic library.

    newswww.securityweek.comDec 2, 2021, 1:09 PM
  • Mozilla fixes critical flaw in Network Security Services (NSS) cryptography librarySecurity Affairs

    Mozilla fixed a critical memory corruption issue affecting its cross-platform Network Security Services (NSS) set of cryptography libraries. Mozilla has addressed a heap-based buffer overflow vulnerability (CVE-2021-43527) in its cross-platform Network Security Services (NSS) set of cryptography libraries. Network Security Services (NSS) is a set of libraries designed to support cross-platform development of security-enabled client and […]

    newssecurityaffairs.comDec 2, 2021, 5:26 AM

Exploit code

Public exploit repository references

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0 repository references · best confidence N/A · max 0 stars
No public PoC repositories have been matched yet.

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