What’s Vulnerable › Vulnerabilities

CVE-2026-116741: Speex through 1.2.1 Out-of-Bounds Write via speex_bits_read_whole_bytes

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-26 · updated 2026-10-27
• Weakness: CWE-787

Description

Speex (libspeex) through 1.2.1 contains an out-of-bounds write vulnerability in speex_bits_read_whole_bytes() in libspeex/bits.c that mishandles length truncation for non-owned SpeexBits buffers. Attackers can stream crafted Speex data into buffers set up with speex_bits_init_buffer() or speex_bits_set_bit_buffer() to corrupt heap or stack memory and crash applications.

Affected products

• Xiph Speex: through 1.2.1

References

• https://github.com/xiph/speex
• https://github.com/xiph/speex/blob/Speex-1.2.1/libspeex/bits.c#L177
• https://github.com/xiph/speex/issues/42
• https://gitlab.xiph.org/xiph/speex/-/merge_requests/32
• https://hackmd.io/@haindpwn/speex-bits-read-whole-bytes-oob-write
• https://www.vulncheck.com/advisories/speex-through-1.2.1-out-of-bounds-write-via-speex-bits-read-whole-bytes

Get alerted when CVE-2026-116741 or the next vulnerability affects your stack