CVE-2026-1005
published 2026-03-19CVE-2026-1005: Integer underflow in wolfSSL packet sniffer <= 5.8.4 allows an attacker to cause a buffer overflow in the AEAD decryption path by injecting a TLS record…
PriorityP431medium5.3CVSS 3.1
AVNACLPRNUINSUCNINAL
EPSS
0.25%
16.4th percentile
Integer underflow in wolfSSL packet sniffer <= 5.8.4 allows an attacker to cause a buffer overflow in the AEAD decryption path by injecting a TLS record shorter than the explicit IV plus authentication tag into traffic inspected by ssl_DecodePacket. The underflow wraps a 16-bit length to a large value that is passed to AEAD decryption routines, causing heap buffer overflow and a crash. An unauthenticated attacker can trigger this remotely via malformed TLS Application Data records.
Affected
5 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | wolfssl | < wolfssl 5.9.0-0.1 (forky) | wolfssl 5.9.0-0.1 (forky) |
| msrc | azl3_mariadb_10.11.16-1_on_azure_linux_3.0 | — | — |
| msrc | cbl2_mariadb_10.6.24-1_on_cbl_mariner_2.0 | — | — |
| wolfssl | wolfssl | <= 5.8.4 | — |
| wolfssl | wolfssl | >= 0 < 5.9.0-0.1 | 5.9.0-0.1 |
CVSS provenance
nvdv3.15.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
nvdv4.02.1LOWCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
osv2.1LOW
vendor_debian2.1LOW
vendor_msrc2.1LOW
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OSV
CVE-2026-1005: Integer underflow in wolfSSL packet sniffer <= 5
osv·2026-03-19·CVSS 2.1
CVE-2026-1005 [LOW] CVE-2026-1005: Integer underflow in wolfSSL packet sniffer <= 5
Integer underflow in wolfSSL packet sniffer <= 5.8.4 allows an attacker to cause a buffer overflow in the AEAD decryption path by injecting a TLS record shorter than the explicit IV plus authentication tag into traffic inspected by ssl_DecodePacket. The underflow wraps a 16-bit length to a large value that is passed to AEAD decryption routines, causing heap buffer overflow and a crash. An unauthenticated attacker can trigger this remotely via malformed TLS Application Data records.
GHSA
GHSA-2q9g-q8jj-fr53: Integer underflow in wolfSSL packet sniffer <= 5
ghsa_unreviewed·2026-03-19
CVE-2026-1005 [LOW] CWE-191 GHSA-2q9g-q8jj-fr53: Integer underflow in wolfSSL packet sniffer <= 5
Integer underflow in wolfSSL packet sniffer <= 5.8.4 allows an attacker to cause a buffer overflow in the AEAD decryption path by injecting a TLS record shorter than the explicit IV plus authentication tag into traffic inspected by ssl_DecodePacket. The underflow wraps a 16-bit length to a large value that is passed to AEAD decryption routines, causing heap buffer overflow and a crash. An unauthenticated attacker can trigger this remotely via malformed TLS Application Data records.
Microsoft
Integer underflow leads to out-of-bounds access in sniffer AES-GCM/CCM/ARIA-GCM decrypt path
vendor_msrc·2026-03-10·CVSS 2.1
CVE-2026-1005 [LOW] CWE-191 Integer underflow leads to out-of-bounds access in sniffer AES-GCM/CCM/ARIA-GCM decrypt path
Integer underflow leads to out-of-bounds access in sniffer AES-GCM/CCM/ARIA-GCM decrypt path
Mariner: Mariner
wolfSSL: wolfSSL
Customer Action Required: Yes
Debian
CVE-2026-1005: wolfssl - Integer underflow in wolfSSL packet sniffer <= 5.8.4 allows an attacker to cause...
vendor_debian·2026·CVSS 2.1
CVE-2026-1005 [LOW] CVE-2026-1005: wolfssl - Integer underflow in wolfSSL packet sniffer <= 5.8.4 allows an attacker to cause...
Integer underflow in wolfSSL packet sniffer <= 5.8.4 allows an attacker to cause a buffer overflow in the AEAD decryption path by injecting a TLS record shorter than the explicit IV plus authentication tag into traffic inspected by ssl_DecodePacket. The underflow wraps a 16-bit length to a large value that is passed to AEAD decryption routines, causing heap buffer overflow and a crash. An unauthenticated attacker can trigger this remotely via malformed TLS Application Data records.
Scope: local
bookworm: open
bullseye: open
forky: resolved (fixed in 5.9.0-0.1)
sid: resolved (fixed in 5.9.0-0.1)
trixie: open
No detection rules found.
No public exploits indexed.
2026-03-19
Published